There are moments when tribulations occur in our lives, and we cannot avoid them. But they are there for some reason. Only when we have overcome them do we understand why they were there.
The Lord heareth the prayers of those who ask to put aside hatred. But He is deaf to those who would flee from love.
If you have a past that dissatisfies you, forget it now. Imagine a new story of your life, and believe in it. Concentrate only on those moments in which you achieved what you desired, and this strength will help you to accomplish what you want.