> A risk taker doesn't sit around feeling sorry for himself. 
    > Specially at 20 years old!

I'm not sure if this is supposed to be tongue-in-cheek, but basically everyone has the emotional capacity for major depressive episodes. It's healthy.

Not sure about "healthy", but "totally normal" or "completely acceptable" instead fit. Also, responds really well to self-guided treatment like cognitive behaviour therapy.

Winston Churchill had fairly brutal depressive bouts, even through his tenure as Prime Minister through WW2

He was also an alcoholic, and high alcohol intake can cause depression all by itself, so there is a confounding factor there.