Giving back is certainly one the most important activities we can do. I find Steve's definition of success interesting, that we have "learned enough to do well and are earning enough money". The question arises, what is enough? Too often, a person's needs rise with rising income, so that one never does earn enough. I would say that one can start giving back the moment one has anything to give.

I think of many friends who have chosen to work in a field of human services, knowing that they will make less than they might in some other field. There have been parts of my own career that have been dedicated to serving others as a full-time volunteer and those experiences have been some of the most fulfilling of my life.