Peer pressure and social norms are powerful influences on behaviour, and they are classic excuses.
I felt ashamed for what I had done. I don't have any excuses. I did what I did. I take full responsibility for myself and my actions. I wouldn't pawn this off on anybody. I'm sorry it happened. And I hurt people.
One of life's fundamental truths states, 'Ask and you shall receive.' As kids we get used to asking for things, but somehow we lose this ability in adulthood. We come up with all sorts of excuses and reasons to avoid any possibility of criticism or rejection.
No excuses and no sob stories. Life is full of excuses if you're looking. I have no time to gripe over misfortune. I don't waste time looking back.
People spend too much time finding other people to blame, too much energy finding excuses for not being what they are capable of being, and not enough energy putting themselves on the line, growing out of the past, and getting on with their lives.