I know just how you feel! One thing that helped me a lot was the "Sedona Method." The whole idea is learning how to "LET IT GO" and then expanding this ability to every problem/issue in your life. Works great if you are open to it and really give it a try.
There's an expensive program that you don't really need to buy...You can also get a lot of the info for free and there's also an online chat group for it somewhere too. Also, the whole program is outlined in a paperback book that's less than $20, so that's not too bad!