How do you learn to fix a mistake before you make one? You may have a weak notion of what you need to do... but you don't know until it happens and have a need

How do you learn to fix a mistake before you make one? You may have a weak notion of what you need to do... but you don't know until it happens and have a need to git dirty. Further, In my opinion of course, these features are great... but someone is going to make git easy while retaining its power. Git is a nacent technology and while Github is dominating now... there is always room for disruption. They, the people who make git easy, will be the winners. Don't make me think.