From 17-25 I was so sure if myself. I would tell you to fuck off straight to your face. I'd quit a job in a heart beat. I was driven by self interest and I truly believed I was right in all things.
From 25-35 I started to buckle down. I got a career and a family. I started thinking more about how my actions affect those around me. I said yes sir more often than fuck you. I feared for the well being of the wife/kid.
From 35 on, I realized that this change was destructive. I learned that my self-interests might actually improve society. I still care about how my actions can directly affect my family, but in a reduced and more manageable way.
When the kid moves out, I believe I'll revert back to my 17-25 year old self.
I cant wait to regularly say fuck you again.