Same here. There’s no single pivotal event I could think of in my life. Lots of crazy, wacky turns, but no single one that shaped the overall plot, that I could think of. I mean, sure, I could probably in a literary sort of way focus on one where I was faced with doing A or B and how choosing B had changed and shaped all that came after it, but I can do that with many important and not-so-important points in my life.
So, no, to the OP.