to repent is to admit and acknowledge the imperfections and the shortcomingsPosted by Thinker (here)
I don't know about remorse in this context... (If you declare you are a failure, then it must be true. Why are you declaring it?)
whatever they might be
so that God can help you back on the right track
if you don't repent then you are not really willing to change for the better
and God doesn't usually interfere with your free will
no you don't have to bow your head before God
He is a friend