Smart people can be astonishingly stupid.
I say that with considerable personal affection for the category.
Intelligence helps you see patterns, model outcomes and argue a position. It also gives you better vocabulary for explaining away behavior you should have questioned much earlier.
The real danger isn't ignorance. Sometimes it's eloquent self-deception.
The explanation arrives after the impulse
Think about the last decision you regretted.
How much of the reasoning happened before you decided, and how much happened afterward, when you were trying to make the decision look sensible?
We like to imagine a rational boardroom inside our heads. The evidence is presented, options are discussed and a sober vote is taken.
Often the emotional decision has already happened. The boardroom is there to issue a press release.
I have mistaken stubbornness for conviction and urgency for importance. I've convinced myself that I was taking a calculated risk when part of me was simply refusing to tolerate being wrong.
That distinction matters because the same outward decision can come from entirely different motives.
What the pattern protects
Self-sabotage isn't always a desire to fail.
Sometimes it's an attempt to avoid a more uncomfortable feeling.
Commit completely and you might discover you're not as good as you think. Stay busy with ten projects and you never have to confront the possibility that one project deserves all your attention. Pick a fight and you don't have to admit you're frightened of being left.
The behavior looks irrational from the outside. From the inside, it may be protecting an identity.
Protection is not the same as progress.
Better questions
Before a big decision, I've learned to ask what I stand to lose emotionally if it doesn't work.
Not financially. Emotionally.
Will I feel embarrassed? Ordinary? Rejected? Powerless? Exposed?
Those answers often explain more than another spreadsheet.
You cannot think your way out of every bad pattern. Sometimes you have to interrupt it before you feel ready.
Intelligence is useful. Self-awareness decides what it's useful for.