"1. When you work hard at something you become good at it."

Yup

"2. When you become good at doing something, you will enjoy it more."

Hmm.. what now?

I'm good at a lot of things I hate. I've spent time doing them either because I had to or because I enjoyed it at the time. For me, it often works the opposite of what he says; when I get better at something, I often find it boring.