I would suggest seeing a counselor. It is good to find someone that you can completely open up too and hear an honest reply. It is hard to get that from family and friends. 1) You don't want to tell them everythingand 2) they will already be biased.
I was not a particularly religious person before my sitch either. However, you will find that a lot of things will be out of your control. Religion helped me let those things go; helped me have faith that things occur for a reason.
Are you getting out and being with people? Running, cycling and especially swimming can be quite isolative. If you are like me, you may be looking for a cave to crawl in. However, it was companionship with friends that improved my mood. Keep up the excercise though and good luck with the races.
