The search for happiness is not about looking at life through rose-colored glasses or blinding oneself to the pain and imperfections of the world. Nor is happiness a state of exultation to be perpetuated at all costs.
It is the purging of mental toxins, such as hatred and obsession, that literally poison the mind. It is also about learning how to put things in perspective and reduce the gap between appearances and reality.
To that end we must acquire a better knowledge of how the mind works and a more accurate insight into the nature of things, for in its deepest sense, suffering is intimately linked to a misapprehension of the nature of reality.