Prepare for your future, don't live in the past. Savor your good memories, and use any bad ones as lessons in life. You need to focus on your future not on your past.
Carve out a niche for yourself in your imagined future. Think, feel and see yourself as successful. To achieve any goal in life, you need to project your end result.
Think of the elation, the satisfaction, the joy you'll feel when you reach your goal. Carry these ecstatic feelings with you every day and they'll bring your desired goals into view.
Sooner or later, you can win, if you think you can. The cards you are dealt in life are less important than the way you play them. Everyday you're offered a new deal and new cards.
Success is out there for you. Don't wait for it to come to you, go out and find it.