True happiness is the meaning of life. Everything we do is based on our desire to be happy. It is our primary motivation for doing our hobbies and choosing the paths we follow in life. It is also the reason why we endure things we don't like; we're convinced that by doing them, happiness will be the light at the end of the tunnel.
Learn how to have true happiness:
http://www.kristensguide.com/Happiness/true_happiness.asp