Who am I? And what i did??

Yes,usually when we do things on the impulse of the moment,we just later on start to analyse what we did,and if it was the right thing to do,and what will be the consequences ,and you can find yourself asking: what did i do?...and yes,maybe even: who am i?... But if we live our lives by always imposing ourselves rules,and thinking things over and over again,we might be afraid to do anything, and we would end up in doing nothing... Sometimes is good to follow the moment, and even if you go wrong,you will have an experience to learn from,and you learn from your mistakes and maybe you won't repeat them... I usually follow my instincts but there are situations where i am afraid to make a step, fearing i might lose what i have now