I figured out TTATT as a MS in the early to mid 1990s, I learned more about TTATT when I because and elder, which occured serveral years after I began to have serious doubts. So, my crossover of attending meetings and fully knowing TTATT, spanned probablly 5 years. Those 5 years were the worst five years of my life, but that is a topic for a different day.
There is no question that learning TTATT is a starting point. but the next question is so, what is next? For some, if not all, the answer to that question is difficult and personally painful. So, if it takes a few years, so be it. It is what it is. There are those who learnTTATT and never get out, which is very sad.
I would be intereted in hearing the stories after you learned TTATT and when you last meeting was.