Duke UniversityPsychiatry Residency
Brigham & Women'sCL Fellowship
Harvard Medical SchoolFaculty
McLean HospitalDirector of Education, Division of Geriatric Psychiatry
Harvard T.H. Chan School of Public HealthM.P.H.
📖 The Journal

Insights on Leadership and the Mind

Essays on the psychology of senior leadership, from a board-certified psychiatrist and executive coach. Written for the executives who carry weight they rarely get to set down.

Coaching · Latest

What Is Executive Coaching? A Psychiatrist Explains What It Is and Is Not

The term covers everything from a weekly phone call with a retired CEO to a structured clinical engagement. Here is a precise definition, and the boundaries that make it useful.

By Dr. Stephanie Collier · October 9, 2026 · 7 min read
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Coaching

Clinical Executive Coaching: What a Psychiatrist Brings to the Work

Most coaches are trained to improve performance. A clinician is trained to notice when the performance problem is a symptom. That difference decides whether months of work land on the right target.

Oct 8, 2026 · 7 min read
Coaching

Executive Coaching vs. Mentoring vs. Consulting: Which One Do You Need?

The three are routinely confused, and the confusion is expensive. A simple test tells them apart: who is the expert on the problem, and who is the subject of the work.

Oct 7, 2026 · 6 min read
Coaching

The ROI of Executive Coaching: What Can Be Measured and What Cannot

The industry quotes returns of five to seven times the fee. The studies behind those figures would not survive a medical journal. Here is how to evaluate coaching without either the hype or the cynicism.

Oct 6, 2026 · 7 min read
Coaching

What Actually Happens in Executive Coaching, Session by Session

Leaders considering coaching rarely know what the hour actually contains. Here is the shape of a serious engagement from the first conversation to the last, with nothing mysterious left in it.

Oct 5, 2026 · 7 min read
Coaching

How Long Does Executive Coaching Take? Engagement Length, Explained

Three months, six, twelve, or indefinitely: the length of an engagement should follow from the problem, not from a package. Here is what actually determines it.

Oct 4, 2026 · 6 min read
Coaching

When to Hire an Executive Coach: Nine Signs It Is Time

Most leaders engage a coach a year or two later than they should have, after the pattern has cost something. These are the signals that it is time, and the cases where it is not.

Oct 3, 2026 · 7 min read
Coaching

When the Company Pays for Your Coach: Who Is Actually the Client?

When the organization pays, the leader, the sponsor, and the coach each have different ideas about what is owed to whom. The engagement works only when that is settled in writing before the first session.

Oct 2, 2026 · 7 min read
Coaching

360 Feedback in Executive Coaching: What It Reveals and What It Misses

The 360 is the most common assessment in executive coaching and the most misread. It measures how a leader lands, not who they are, and the gap between the two is where the work lives.

Oct 1, 2026 · 7 min read
Coaching

Virtual Executive Coaching: Does Coaching by Video Actually Work?

Most of my practice now happens by video, and the outcomes have not suffered. But something is different, and it is worth being precise about what.

Sep 30, 2026 · 6 min read
Governance

Managing the Board: How Chief Executives Build a Relationship That Holds

Most chief executives treat the board as an audience or a threat. Neither produces a relationship that holds when the company hits real difficulty. Here is what does.

Sep 30, 2026 · 7 min read
Leadership

When the Top Team Is the Problem: Conflict in the Executive Team

A leadership team without visible conflict is rarely harmonious. More often, disagreement has simply moved somewhere the chief executive can no longer see it.

Sep 27, 2026 · 7 min read
Leadership

The Conversations Leaders Avoid: Firing, Hard Feedback, and Bad News

Most leaders know what they need to say. What stops them is what the conversation does to their own nervous system, and that is the part almost no one prepares for.

Sep 24, 2026 · 8 min read
Performance

Why Senior Leaders Struggle to Delegate, and How to Actually Let Go

Delegation advice treats the problem as a matter of technique. For most senior leaders it is a matter of what letting go feels like, and that is where the work has to happen.

Sep 21, 2026 · 8 min read
Transitions

From VP to the C-Suite: What Actually Changes, and What Gets You There

The move from vice president to the C-suite is not a bigger version of the job you have. It is a different job, and the people who make it usually start doing that job before they hold the title.

Sep 18, 2026 · 8 min read
Transitions

The First-Time CEO: What Changes When There Is No One Above You

The first-time CEO usually prepares for the strategy and the operating load. What catches most of them off guard is how differently the world behaves toward the person at the top.

Sep 15, 2026 · 8 min read
Leadership

Executive Presence: What It Actually Is and How to Develop It

Executive presence is usually described as a matter of polish. In my experience it has much more to do with what is happening inside a leader when the room becomes difficult.

Sep 12, 2026 · 8 min read
Leadership

Leading Through Organizational Change: The Part the Plan Leaves Out

Most change efforts are designed as if people were components to be reconfigured. Change is a psychological event before it is an operational one.

Sep 9, 2026 · 7 min read
Burnout & Recovery

Work-Life Balance for Executives: What the Role Costs at Home

For senior leaders, the problem is seldom time at home. It is presence, and the people closest to them absorb its absence long before the executive notices.

Sep 6, 2026 · 7 min read
Transitions

Stuck at the Top: The Executive Career Plateau and What Comes Next

Many executives feel stuck not because they have failed but because they have arrived. The goal that organized a career is gone, and something has gone quiet.

Sep 3, 2026 · 7 min read
Coaching

What Executive Coaching Costs, and What Actually Determines the Price

Executive coaching rates range from a few hundred dollars an hour to several thousand. Here is what sits behind those numbers and how a senior leader should evaluate the spend.

Aug 13, 2026 · 11 min read
Coaching

Does Executive Coaching Work? What the Evidence Actually Shows

The research on executive coaching is more encouraging than skeptics assume and weaker than the industry implies. What matters most is what predicts a good outcome.

Aug 7, 2026 · 8 min read
Governance

What Boards Miss When They Assess a Chief Executive

Directors are trained to read results. Very few are trained to read the person producing them, and the gap between the two is where most leadership failures incubate.

Aug 1, 2026 · 8 min read
Leadership

When the Company Is You: Founder Identity and the Cost of Fusion

The fusion of founder and company produces the conviction that builds something from nothing. It also produces a specific and predictable set of failures.

Jul 27, 2026 · 8 min read
Performance

Perfectionism in Senior Leaders: The Strength That Becomes a Constraint

High standards and perfectionism look identical from the outside and function completely differently from the inside. The distinction determines whether the trait builds a career or slowly dismantles one.

Jul 21, 2026 · 8 min read
Leadership

The Psychological Toll of Leading a Layoff

Organizations prepare leaders for the mechanics of a workforce reduction and almost never for what conducting one does to the person who has to do it.

Jul 15, 2026 · 8 min read
Mental Health

Alcohol and Executive Performance: An Honest Clinical Look

Most executives who drink are not in trouble. Almost all of them are paying a performance cost they have not measured, because the mechanism is invisible from the inside.

Jul 9, 2026 · 8 min read
Mental Health

Attention Without Deficit: Recognizing ADHD in Senior Leaders

Many senior leaders reach the C-suite with undiagnosed ADHD, carried there by intelligence and compensation. The scaffolding usually fails at a predictable point.

Jul 3, 2026 · 8 min read
Leadership

Leading Through Personal Loss: Grief in the Executive Chair

Grief is a physiological event with measurable effects on cognition, and organizations schedule three days for it. What senior leaders need to know about leading through loss.

Jun 29, 2026 · 8 min read
Coaching

What Actually Stays Private in Executive Coaching

Coaching confidentiality is a professional commitment, not a legal privilege. The difference matters most in exactly the situations where a leader most needs to speak freely.

Jun 24, 2026 · 8 min read
Burnout & Recovery

The Warning Signs of Executive Burnout (From a Psychiatrist's Perspective)

What executive burnout looks like beneath the surface, and why the earliest signs are physiological and cognitive long before they become behavioral.

Jun 18, 2026 · 7 min read
Leadership

The Loneliness of the CEO: Why Isolation at the Top Is a Clinical Risk

Why the isolation that comes with the top job is not a personality issue but a structural and clinical risk with real consequences for judgment and health.

Jun 11, 2026 · 8 min read
Coaching

Executive Coaching vs. Therapy: What's the Difference, and Which Do You Need?

An honest account of how executive coaching and therapy differ, where they overlap, and how to tell which one your situation actually calls for.

Jun 4, 2026 · 8 min read
Performance

Decision Fatigue in Senior Leaders: The Hidden Tax on Judgment

The neuroscience of why a leader's tenth good decision is harder than their first, and what senior leaders can do to protect the quality of their judgment.

May 28, 2026 · 7 min read
Performance

Sleep and Executive Performance: The Most Underrated Leadership Edge

Why the sleep most executives treat as expendable is, clinically, the single most reliable lever for sharper judgment and steadier leadership.

May 21, 2026 · 7 min read
Leadership

The Resilience Myth: Why "Toughing It Out" Fails Senior Leaders

Resilience is not the ability to absorb unlimited strain without complaint. The leaders who treat it that way are the ones most likely to break.

May 14, 2026 · 7 min read
Leadership

Imposter Syndrome in the C-Suite: A Clinician's Field Guide

Imposter feelings rarely disappear with success; they often sharpen. A clinician's guide to understanding and working with them at the highest levels.

May 7, 2026 · 8 min read
Transitions

The First 90 Days: A Clinical Approach to Executive Transitions

The first 90 days of an executive role reward structured observation over early action, and a clinical lens shows leaders how to read the system before changing it.

Apr 30, 2026 · 8 min read
Mental Health

High-Functioning Anxiety in Leaders: The Performance Trap

High-functioning anxiety drives the behaviors organizations reward, which is exactly why it goes unrecognized and unaddressed in senior leaders.

Apr 23, 2026 · 8 min read
Coaching

How to Choose an Executive Coach: A 15-Point Evaluation Checklist

A scoreable evaluation instrument for senior leaders: fifteen criteria across five sections, five automatic disqualifiers, and the six questions that separate a prepared practitioner from a persuasive one.

Apr 16, 2026 · 12 min read

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