Margen
Jeff Bezos once wrote to his shareholders that there are two kinds of decisions. Type 1 decisions are one-way doors: if you walk through and don't like what you find, you can't go back. Selling your house, burning a bridge, signing certain things away. Type 2 decisions are two-way doors: you walk through, take a look, and if it doesn't convince you, you walk right back out. Signing up for a course, changing your morning routine, showing your project, writing to that person.
The mistake, he said, is treating almost everything as Type 1: applying to reversible decisions the heavy machinery of fear — consultations, lists, weeks of doubt — for a door that swings both ways.
The usable idea is a prior question: before deciding anything, decide what kind of door it is. If it's reversible, decide fast, with 70% of the information, and correct as you go; the cost of being wrong is just walking back through. If it's truly irreversible, then yes: all the slowness in the world.
Most of the things holding you back today are revolving doors disguised as walls.