I remember an episode from the Twilight Zone where this 40-year-old guy runs into his 20-year-old self. Neither can stand the other one. 20-year-old guy thinks 40-year-old guy has sold out and is working for the man. 40-year-old guy thinks 20-year-old guy is a judgmental, self-righteous jerk.
It's an interesting concept. What would we think of our younger self if we were to meet? And what would our younger self think of us? It speaks to the concept of growth. Sometimes I'll look back at a previous version of myself and compare how that guy thought and behaved. If you don't think your former self was a little bit of an asshole it means you haven't grown.
I went through a pivotal period about six years ago, so that's a convenient point to look back at. What's interesting to me now is how that guy thought he was a finished product... that he pretty much had things figured out. That guy was a little bit of an asshole.