You can do nothing about the past except forgive it, which is not a small thing but which is significant and necessary. Your future is weighted and dragged backwards by the events of an unforgiven past.
Once you have released the hold your past has on you, the future is bright. You can make any new decision you want to make because the law of the Universe is on your side. It always has been and it always will be. Without judging the positive or negativity of your desire, it simply complies with your dominant thinking. Thoughts of greatness and possibility are manifested as equally as thoughts of lack and inabilities. Think, then speak your best life into existence. Whatever you believe is true, is true for you. If that's the case, believe in your greatness. The Universe does and is waiting for you.