[greymeister]

Did you have the information necessary to make the correct decision? Most problems or failures I've encountered in software come to missing information much more often than any other reason. Having justifications for the decisions you reach given the information you had available should lead you to feeling confident in the actions you take. No one has all the pertinent information available at all times, and anyone who acts that way is disingenuous.

I believe it is human nature to put more emphasis on failure than success, but I also believe that people set themselves up for failure by assuming that their decisions are somehow flawed compared to others. Most decisions we make are based on incomplete information, so the only recourse is to build stating your justifications with your decisions so that others's may review them in the light of the information you had available.