This presupposes a very important thing, which is, how do you define a mistake? Is it a decision that other people are unhappy with, even if you still think it

This presupposes a very important thing, which is, how do you define a mistake? Is it a decision that other people are unhappy with, even if you still think it was right? That you yourself are unhappy with, even if others approve? What if you've made a decision with mixed results, bad and good? Was that a mistake? A partial mistake? Are "mistakes" on a gradient, and if so, is there a tipping point at which you follow the outlined procedure?