i would challenge anybody in their darkest moment to write what they're grateful for, even stupid little things like the green grass that made them feel good, the friendly conversation they had with somebody on an alevator. You start to realize how rich you are.
No matter how much money one has, he will never consider himself rich. Rich is an utopic state, of unlimited wealth. It just so happens that wealth is finite, no matter how much you have. The more you have the more you have to loose. That being said, real wealth is found inside and money is merely a tool to help you achieve your goals.