"If you're 37... Instead of regretting that you can't wake up age 18 again, pretend to yourself that you're 90 and you've woken up age 37 again, and that you get to magically, wonderfully have the next 50 years again."
"Focus on the things you are for, not the things you are against.
Many people spend large chunks of their day thinking about what they hate. They are always telling you about something they dislike: this food, that subject, this political party, that coworker.
You are more than your frustrations. Build your identity around what you love."