Why let go?
No matter how much you may want to effect a change, there are some problems that can't be solved by any action on your part. You just have to wait and see how things turn out. Worrying about the matter won't help.
What does letting go mean?
Letting go means giving up your sense of control, and this can be difficult to do. Often people feel that if they worry enough, they might affect the outcome. But in those cases and times when control doesn't help and worry only hurts, it's worth the effort to give up both worry and control.
How can you let worry go?
Different people have different ways. Some find that meditation helps (which I have began doing). Some listen to music or sing a song. Try putting your worry in the palm of your hand and blowing it away. Close your eyes and imagine the worry putting on its coat and hat and walking slowly out of the room. The important thing for you is to say good-bye to useless worry.
Check out this amazing article I came across while doing some research, posted by Erika Johnsen "Let It Go"---> http://kortekum.blogspot.com/2010/06/let-it-go-by-t-d-jakes.html