As a psychiatrist, I’ve seen how chasing happiness leads to misery | Psyche Ideas
Note that seeking happiness as an end might be counterproductive. Many people report that constantly checking to see if they are happy actually decreases their happiness - a report that fits with the research on "flow." It may be better to seek some of the above goals as ends, and happiness will be a side-effect.
LessWrong • How to Be Happy - LessWrong
“Happiness is not achieved by the conscious pursuit of happiness; it is generally the by-product of other activities.”
— Aldous Huxley