For you to live this valuable life, you must believe in yourself. Accept that you can make bad decisions.  Accept that you get another chance.  Accept that you will do better next time and if not, you will be given another chance.  Work hard in life and grow.  Never forget we live in a world of GRACE which means we get another chance. Grace gives us the chance to start again without a past.  Leave the past, let it go, forgive yourself and move on.