How to give of yourself

Whatever you do something for someone else, "you must always make sure that you are genuinely enjoying yourself. Doing things for other people's sake will lead to feelings of corrosive resentment that will then find expression in some unhealthy fashion, like cancer. Your first responsibility is to your own happiness. If you are unhappy and you do things merely out of a sense of duty rather than genuine love and generosity, then others will sense that and ugliness will result." (Tom Hodgkinson - writer for Slate.com)

This is what I think about helping/taking care of other people, but can't always articulate as clearly as this person did. Hopefully, I will keep this in mind.