Have you always grown up gradually, changing a little at a time, or have there been points in your life when you've changed suddenly?

I know everyone grows and matures at a fairly gradual pace, but have you had moments when something in your life suddenly clicked into place, thereby affecting a drastic sudden change in your outlook and in your overall person?

In going over some journal entries and questions of mine from last year, I can see how much I actually changed in the course of just a few months. I also went through some really drastic changes recently and it sort of shocks me to see such a massive difference in myself in such a short period of time. It’s to the point when I barely recognize who I used to be.