Sanchy and Patkim,
So much good advice here. All I can add is that when I gave up my "privileges" (ugh) I also did it in such a way that they gave me a reduced workload with minimal activity, but enough to show the congregation I was still a witness in good standing but just burned out. I did those activities well at first and then got slowly, very slowly, worse at them. Eventually, say 6-8 months, I told the brothers that I just couldn't handle even the minimal responsibility they gave me right now. Let me focus on my health, my family and my spirituality and I can serve again in the future. Hah, I never intended to serve again!! It worked, it was slow and painful but I maintained my marriage and I am not shunned. In fact just the other day someone from the hall saw me at a restaurant and said "Hi Brother XXX". I was floored.