I was all in for 42 years from age 10 until age 52. Tremendous cognitive dissonance nearly killed me-- outpatient hospitalization for severe recurrent clinical depression and PTSD and an emergency hospitalization for toxicity from prescription over medication in less than six month's time.
Walked out of a Service Meeting knowing I had hit the wall and just couldn't do it any more.
Spent six weeks on my couch thinking through my doctrinal issues and unjust treatment of friends and family through the years. I didn't talk about it with anyone, as I didn't want to be influenced. I wanted it to be my decision. Got up and told my 30-years-faded husband, DF'd son and daughter who walked away at age 17 that I wasn't going to be a witness anymore. Still a believer; just done. I wasn't going to shun my son. Case closed.
Took my son's former MIL to the District Assembly as promised. Laughed at the whole 'the feet in Daniel's dream image mean nothing' stupidity ( I had called bullsh*t on the overlapping generation crap the year before.) and thought, "These are bobbled headed Stepford Wives."
Two weeks later served the substitute C.O. and his wife lunch, but didn't go to the meetings.
Read The God Delusion (recommended by hubby), Crisis of Conscience and JWfacts in one week's time. The Internet sealed the deal.
From believer to POMO in three month's time from when I walked out of the Service Meeting until I knew it was a complete lie and a cult.
Resigned a few years later when I couldn't tolerate being stalked by the local small town JWs any more. Threatened to sue if they came on my property or announced my name from the platform. Not a peep since, and I'm not being shunned (yet).
At this point I simply don't care. 6.5 years out, happy and free!