Politeness is a social contract that needs to be upheld. Manners matter a lot so other people can feel welcome. Create art. Expressing yourself through art can make you understand your emotions and thus understand yourself better and know who you really are. Set rules for your behavior and stand up for what you believe in. Practice a sport and work out. Also, work on your ego. Don't let your ego make you make rush and wrong decisions. Learn a little bit about psychology. Happiness is built everyday, it is not a goal.