I had lots of cognitive dissonance and squashed lingering doubts, that probably started when a friend of mine was physically attacked with a knife by his abusive elder father, and after going to the PO about it and being told that the matter would be handled, was later told that all was just "a misunderstanding". That was in 1993. I was extremely unhinged over this at the time. My friend was smart and got the hell out shortly after that incident.
12 years later, after several years of a bad marriage, I decided it made no sense to stay in such a marriage. This led me to questioning the entire marriage/divorce relationship as understood by the JWs, and shortly after that the dominoes began to fall. I stopped going to meetings entirely within 6 months of drawing those conclusions.
I healed, and finally starting asking all of those tough questions that were bottled up due to the cognitive dissonance, and they rest was history.
d4g