Birth order personality differences are nothing new - but it's still fun to read. Can you guess which one I am?

What I've also found fascinating is the fact that each new sibling changes fundamentally who we are and the person we will become later in life. (This upsets my mother greatly - and I have to say it's not necessarily better or worse, just different.)

So my brother (who is the oldest) is different because my older sister was born. And she's different than who she might otherwise have been because I was born. And I am who I am because my younger sister was born. It's probably one of the reasons I never did drugs - these thoughts can keep me up nights when I'm not on something. Imagine the trips I'd have if I actually took a mind-altering substance. (Alcohol doesn't count - that's a mood-altering substance.)