Okay folks,I know that there must be a hundred threads on this subject already, but...

I've decided to come out to my family tomorrow, and it means allot. It means that I'll have to leave my religion (Jehovah's witnesses,) which I was raised in. It means that as a result, every friend I've ever made in my life will no longer be allowed to talk to me.
It means that my family might not want to talk to me either.

This is something I know I have to do for my own sanity's sake, but I'm so scared of the consequences (Namely, losing my friends) that I can't sleep. I feel sick.
Please, does anybody have any advice for me?