Have you ever convinced a religious person to become atheistic? How did you do this? How long did it take? Were the people in some sort of life crisis, or were they just living along?
This is probably a quite difficult task of persuasion. So stories how people were successful at it could be very interesting to improve ones' persuasion abilities.
Relatedly, it might be interesting to know what religious groups have gathered on techniques to convert people to their religion - are there some manuals/techniques floating around?
Two conversion stories of my own.
My atheism feels inevitable now, but may not actually have been. I was raised as a catholic and believed myself to be having conversations with God (admittedly one sided ones), and that he was observing me al the time (which was awkward when I thought about it). I was exposed to reason and logic, as well as left wing politics. I was aware of the contradiction between my mother's belief and her not agreeing with most of the church's positions. I grew more detatched, and started declaring myself as a deist (although, having not been exposed to that particular term, I claimed (at age 17) to believe in God but not religion). Soon after I came to the realisation that there was no-one I was talking to on the other end.
I would owe most of that conversion to a supportive, non-forceful environment (while my primary school was catholic, my secondary school was secular. That said, one of the staunchest atheists, and indeed rationalist that I know went to a catholic secondary school as well), and exposure to scientific ideas. There was no pressure on me to believe a particular thing- in particular no social group required me to continue belief.
The other personal conversion moment, and the biggest "changing my mind" moment in my adult life was on vegetarianism. I was a devoted eater of meat throughout my childhood, and I presume I still love meat (admittedly it has been seven years since I have eaten it), and even mocked arguments for vegetarianism. Then at age 19 I read a book of popular philosophy. The name escapes me: it wasn't terribly good, but went chapter by chapter through popular conundrums (teleportation dilemma, for instance). There was a chapter on vegetarianism, and I found its moral arguments fairly compelling. I discussed this with several people, hoping for them to convince me that I was wrong, but failed to find a convincing counter argument.
Then a year later I had joined environmental groups at university, and had a desire to live a more ethical and environmentally friendly lifestyle. During a meeting, a compelling argument was made that one of the most significant personal actions I could take to reduce my carbon foot print was to stop eating meat. So I did.
I genuinely believe that the arguments persuaded me there. I certainly wanted to fit in with `ethical' people, but the decision that vegetarianism was more ethical was my own.
I think converting when you know that you are on your own is harder and a braver thing to do, and both those conversions cost me not that much; my family was supportive of both choices, the only real cost is not eating meat anymore. For people who stand to lose social standing and possibly good friends by changing their minds I suspect it would be much harder.