sports psychology

I'm trying out something I learned from reading a book about sports psychology and mental toughness. Every time I feel stressed out by work, I tell myself: "It's okay, you like challenges" and "This is tough but you'll grow from this."

Positive body language also helps. So I need to sit, stand, or walk with confidence as if I enjoy this challenge.

It sounds kinda kooky, but I'll try anything so long as it is legal.