Not like this, but I hope you appreciate the humor.
thenewgreen posted this question about a day ago, and I briefly and drunkenly told a brief story of when I broke off from religion. Thing is, it's not uncommon; plenty of people have specific moments where they either adopt a religion (i.e. testimony) or reject one (i.e. recantation). I'm sure there are other words to describe the phenomenon, but that's not what I'm asking.
What event has caused you, if ever, to have a major conceptual shift in your way of thinking?