Within.

It's always easier to be nasty, to be rude, to be condescending. Easier things always make you feel better about yourself. At least that's what I observed from the people around me, or even close to me. I'm thankful that this tiny voice at the back of my head resonates with me, that I don't fall into the same trap though I was very inclined to.

Tough days won't last but tough people do.

I'm generally thankful and probably keeping things this way.