According to ancient teachings, "want" or "desire" is the foundation of all unhappiness. See, it leads us to the feeling of inadequacy; that we are missing something valuable and vital to our survival. Even by wanting happiness, we are effectively making ourselves less happy.
In order to smile more often, we have to renounce that urge to be, "happy" and instead find comfort in contentment. We must appreciate the here and now, treasure every moment of our lives and rejoice in the cheer we can bring to the lives of others... when we stop looking inwards on our own feelings and focus on the state of the world and the people around us then we will find happiness.
Someone gave me a call today...i love you, thanks.
Peace and love