You don't have to justify your reasons for saying "no".
Family and true friends don't care.
Happiness is key.
Read widely. You can never have too many books.
Sometimes you have to step out of your comfort zone.
Worrying doesn't change anything, so try and let go.
You'll only regret what you didn't do.
Not everyone will like you.
Think about what you're hoping to gain from a situation and the way your words make people feel.
Appreciate the little things.