If you're a happy person, you will probably be even happier with more money, but if you are an unhappy person, no amount of money will change that. Make happiness your goal. Let the money take care of itself.
What I came to realize is that money, like a birdbath, has a self-leveling effect. No matter what we do, the amount of money we have, as well as the sense we have of our own richness or poorness, remains leveled.