Overanalysis has been my life story. It can be far worse than laziness, as overanalysis leads to the same lack of action but ALSO self-loathing. What helped me quite a bit was studying military history, military strategy, and decisive battles. The stories informed how I overcame paralysis by analysis. Step one is set deadlines for decisions. In warfare, you rarely have complete information, and if you wait to push certainty from 75% to 85%, say, that lag time could cause you to lose advantage and opportunity. It's the same in many parts of life. So I set deadlines. By X point in time, I must make a go or no-go decision, no matter how much or how little information I have. Furthermore, I try and figure out small, short-term, low-risk experiments I can run as "go" decisions, so that I don't perceive action as high-risk. In short: Set deadlines for decisions (put them in your calendar or they aren't real) and break large intimidating actions/projects into tiny mini-experiments that allow you to overcome fear of failure. Once you have a little momentum, the paralysis usually disappears on its own.