What does it mean that overcommitment is a pattern not an accident?

If you consistently take on too much there is a pattern to examine.

Example: You agree to lead a side project at work because you felt put on the spot in the meeting. You volunteer to organize the neighborhood event because nobody else stepped up. You say yes to the freelance gig because the money would be nice and the deadline seems far away. You commit to a friend's moving day even though your weekend is already full. Individually, each yes felt reasonable — even generous. But by Thursday you are paralyzed, staring at a calendar that physically cannot hold everything you promised. This is not the first time. It happened last month, and the month before that, and six months before that. You keep arriving at the same overwhelmed place by a different sequence of yeses. The sequence changes. The destination does not. That repetition is the data point that matters.

Try this: Conduct an overcommitment autopsy. List your last five instances of overcommitment — times you took on more than you could handle and either dropped something, delivered poorly, or burned yourself out to meet every obligation. For each instance, write down: (1) what you said yes to, (2) what you were feeling at the moment you said yes, (3) what you were afraid would happen if you said no, and (4) which of the five pattern drivers — people-pleasing, FOMO, identity attachment to busyness, planning fallacy, or future-time slack illusion — was operating. Look for repeats. If three of five instances share the same driver, you have found your dominant overcommitment pattern. Name it. That name is now a tripwire you can use before the next yes.