Time is your most limited resource. You can always make more money, but you can only buy so much time. Happiness is not a reward for giving up most of your time in exchange for money. Happiness is a consequence of spending your time wisely:
Spend time with the right people.
Spend time on the right activities.
Daydream.
Breathe.
Constantly Reexamine.
Stanford Business School has a nice article about these concepts here.