Why don't some people take action after making a decision?

This was one of my hardest personal problems, and I spent a long time solving it - partly because my first answer was wrong in a flattering way.

There's plenty of research online about why smart people struggle to take action. I read it and happily concluded that my problem was my smartness. Smart people see all the angles, all the risks, so of course they hesitate. It sounded good. I invested a lot of time in that explanation before I finally admitted it wasn't the real one.

The real reason was simpler and less comfortable: I didn't believe in my ability to make my decisions real. That's the core of it. When you truly believe you can make something happen, potential obstacles stop mattering so much - not because they disappear, but because you know from experience that you'll handle them, the same way you've handled everything so far.

So here's my revised view: it's not smart people who struggle to act after deciding. It's people who don't believe in themselves. They keep dulling the plans they already made, thinking and rethinking instead of moving. And the gap between "I'm going to do this" and "I'm doing this" produces almost nothing except doubt. Yes, waiting can give you a little more knowledge, a little more data. But mostly it produces doubt, and that doubt quietly reopens a decision you had already closed.

The fix isn't more analysis. It's belief: believe in yourself, and believe you can figure out whatever shows up on the path you're already walking.