Happiness

"Happiness consists more in small conveniences of pleasures that occur every day, than in great pieces of good fortune that happen but seldom to a man in the course of his life." 

- Ben Franklin

"Happiness is like a butterfly which, when pursued, is always            beyond our grasp, but, if you will sit down quietly, may alight             upon you." 

 - Nathaniel Hawthorne

If you aren't happy, why aren't you?
Chances are it is because you want something which you do not have, objects or conditions. This is probably not a good enough reason.
You may have seen  children  around you laughing and playing, unconcerned that they should have more to be happy about. They are happy because they are playing, because they have their friends and family, and some food to eat. Everyone has the right to be happy.Don't strive too hard for that which will not make you happier in the end.Happiness is inside us, in our minds, in our thinking. It is not external material things or experiences, but the enjoyment of our thoughts and feelings. This is good because our thoughts, and therefore our happiness, are up to us.
Make a habit of substituting unhappy thoughts with happy thoughts.  We all have some nice experiences to recollect and there are usually little pleasures around us most of the time. You can even imagine enjoyable experiences, and it will have a similar positive effect.