As I see it, aside from the obvious (Security, food, etc.) money lets you focus more on certain activities of your own choice. Either through more time or more efficient use of time (ie: pay for a coach, etc.).

This can make you happier if those activities align with what brings you happiness in a sustainable way. Many people are pretty terrible at knowing what that is or caring to do those activities which just makes it a net neutral. Cocaine fueled benders instead of a top tier therapist type of stuff.