Some very good ideas from an article on fun:
psychologist Mike Rucker makes the case that pursuit of fun experiences may be even more valuable than seeking the sometimes abstract goal of happiness.
"Happiness is a state of mind," Rucker writes. "But fun is something you can do. It doesn't require education, money or power. All it requires is intentionality. If happiness is a mirage, fun is your backyard oasis."
"Happiness is really an evaluation," ... You are constantly asking yourself what is going right and what is going wrong. It can become a trap,..."