
By trying to avoid disappointing someone, we set an overly optimistic timeline, miss it, and then…disappoint them.
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The Problem
Over the last few weeks in The Buyer's Seat series, we've explored the subtle traps of influence inspired by my experience in, well, the buyer’s seat. Sitting on this side of the table recently highlighted a trap you know well, because you've been on the receiving end of it.
You have a great initial conversation with a vendor, potential partner, or a colleague. The energy is high. At the end they enthusiastically promise to have that proposal to you tomorrow or feedback on that brief tonight.
Tomorrow or tonight comes and goes. No promised doc in sight.
When they finally send it late with a rushed apology, you reply with a, "No worries at all! Thanks for sending."
You likely aren’t going to call out a missed micro-commitment. But you definitely notice it, and your brain registers them as just a little less reliable.
When we are in their shoes, we do the same thing. We overpromise because we want to build trust and momentum in the moment. The Inner Critic says you’ve got to do this as quickly as possible for them to be impressed!
But in the end we trigger a self-fulfilling prophecy. By trying to avoid disappointing them, we set an overly optimistic timeline, miss it, and then…disappoint them.
The Discovery
When you break a micro-commitment, you are doing psychological damage on two separate fronts.
The first is interpersonal. Dr. Judee Burgoon introduced Expectancy Violations Theory. Her research shows that humans have deeply ingrained expectations for professional behavior. When someone expects a specific normative action (like receiving an email when you promised it) and you violate that expectation, it forces their brain to actively re-evaluate you.
When you miss the timeline you set, their brain instantly flags you as unpredictable. If they can't trust you with a simple calendar date, how can they trust you with a high-stakes project?
But the second front is even more damaging, because it is intrapersonal.
Psychologist Dr. Daryl Bem’s Self-Perception Theory 2 says that we develop our self-concept by observing our own actions. We are our own audience. When you routinely break promises to others, your brain observes that behavior and categorizes you as unreliable.
This destroys your internal congruence. You lose your swagger because your internal reality (I am an inconsistent person) doesn’t match what you are trying to project (I am a high-performing leader).
The Experiment
The urge to overpromise is a biological response to the adrenaline of a great conversation. You want to keep the high going. To protect your credibility and your self-perception, separate your enthusiasm for the work from your commitment to the timeline.
Here is a 3-part progression to try on for size the next time you feel the urge to overpromise:
1. Buffer Reality
Your Inner Critic can convince you that tomorrow’s calendar is magically wide open. It isn't. You need to build a structural defense against your own distorting optimism.
The Shift: Automatically add a buffer to your first instinct.
The Action: If your brain say you can get this done by Tuesday, verbally promise Thursday. If you deliver it on Wednesday, you just turned a potential expectancy violation into a positive surprise
2. Pause Then Commit
If you are caught off guard or if the request is too complex for a quick reality buffer, do not guess. Break the habit of making concrete timeline commitments when you really don’t know.
The Shift: Commit to a follow up, not the timeline.
The Script: "I’m pumped to dive into this. Let me take a look at my week this afternoon, and I’ll shoot you a note by 5:00 with a realistic timeline for getting this back to you.”
3. Reset Preemptively
Life happens. But the expectancy violation happens because you went silent. If you are going to miss the deadline, you have to renegotiate it before the deadline passes.
The Shift: Move from a late apology to a proactive reset.
The Script (sent 24 hours before the deadline): "I want to give this a little more attention, and a board meeting threw my best laid plans out the window. I’m going to get this over to you on Monday morning instead. Let me know if that puts you in a bind, though, and we'll figure it out!
Like with all scripts I offer, they are one way to say them, not the only way. You have to find the words that feel natural and true to you.
The Takeaway
Since AI can generate a perfectly formatted brief or proposal in seconds, trust isn’t built in the documents you share so much anymore.
Trust is built in the human spaces between the work, like the reliability of someone who simply does exactly what they say they are going to do.
To recap, we’ve now covered:
And today, the psychological cost of your timelines
See you next week!
Join the community of leaders staying sharp
and saying human in the age of AI.
1 A Communication Model of Personal Space Violations: Explication and an Initial Test
2 Self-Perception: An Alternative Interpretation of Cognitive Dissonance Phenomena


