There are two things that get me through tough times. One is what I flippantly call "the faith thing." This is my abiding belief that no matter what happens, it is for the greater good in the long run. The other is the Serenity Prayer - asking for strength and guidance to do what's best in a given situation.
--- but here's a cyber (((hug))) just because I totally understand what you are saying.
Sending positive thoughts your way,