I used to want to be a pyramid.
When people got mad, I'd say that I wanted to be a contract killer or a professional thief. Join the CIA and all that. Become Jason Bourne, you know?

When I got older, I decided that I'd like to be a paleontologist.

Then I decided the practical thing to do would be to become a writer (I'm an idiot)

Not I'm a teacher/Writer and I still think it'd be nice to restart school all over again and become a paleontologist/archaeologist anyway. But that just doesn't seem like a wise thing to do.