One of the main reasons we don't feel happy is because we don't feel significant.
See http://www.kristensguide.com/Happiness/Significance/need_significance.asp
We can instantly improve our self-esteem and increase the level of happiness in your lives if we realize that we already are significant and have the ability to be more significant that we have ever imagined we could be.
Today is the day to realize your significance:
http://www.kristensguide.com/Happiness/Significance/realizing_your_significance.asp