Whatever happens in life (within reason) treat it as being for the better and not for the worse.
Happiness isn’t a destination
Imagine yourself sitting in a team meeting.
I used to go around and ask every smart person I met—even emailing important people I didn’t know— “What books do you recommend to a kid like me?”
Make one healthier food choice each day. Just one.
Happy people spend time outside just for the sake of it.
Be clear with your intentions. “Hanging out” is not dating, and if you aren’t interested in someone enough to go out on a limb and ask to take them to dinner, you probably aren’t interested in them enough to be dating them at all.
Become successful. They say success is the best revenge for anyone. Let your ex know that you became successful without them and how worthless they were in your world after all.
They treat everyone equally, and do not use someone’s attitude as an indicator of whether or not they should alter their behavior around them. After all: character is how you treat those who can do nothing for you.
They differentiate choosing a feeling and choosing an action.