Hi Skepsis,
Many of us here have stepped down from various positions within the Organization. I was an Elder, on the RBC, a School Overseer, two public talks a month and and lot, lot more ... so I can sympathize with your feelings and the pressures you've had to endure. As a consequence, my advice to you, is to slowly drop responsibilities over time, according to your own timetable. Getting burnt-out isn't fun and believe me when I say, it takes a long time to recover ... so look after your own health, whatever it takes. And If people try to make you feel guilty, just remember that if the shoe was on the other foot .... if you were no longer valuable to Society ... you'd be dropped like a hot potato. Just like the DO's, Special Pioneers and the thousands of sacked Bethelites; on the road without a penny to their name.