Too much of anything ain't good, and the same applies to money as well. What brings happiness is your belief systems, your thoughts, your leisure activities (which may or may not require money, btw), your relationships and your attitude to your life in general. Money has no correlation to happiness. The more you go behind it, the sooner you forget what's the world all about as you get lost in the race to make more. You may make more certainly, but the pressures of it all will ensure you hit the grave sooner than someone who leads a simple, contended life (whatever be the definition of it you give.) You don't want to be the richest man in the cemetery, do you? Or, do you want to look for inner peace and simple things and be contended with what you make and what you get? It's your choice!
