I was going to post the thread that Blondie already posted: http://www.jehovahs-witness.com/topic/34518/on-art-fading?page=1&size=20
I want to add that you have to quit as an MS. I haven't read any details, but the easiest way to quit is to move to another congregation, then don't accept the title if asked. The next way is to be too busy to do your MS job and miss meetings, turn in a string of 1-hour months or no-hours if you are really brave. When asked about it, tell them it bothers you that you did so bad and don't see yourself doing better soon with your "depression" or "overwhelming work" or whatever, and you want to resign. DON'T TAKE NO FOR AN ANSWER.
What even helps- if you have seen a doctor, any doctor- even one on television, and you take any medication- even vitamins, you can say you have been depressed and have been seeing a doctor and are on medication. You feel it's best to stop being an MS. DON'T TAKE NO FOR AN ANSWER.
Then just fade out from meetings.