Like all we are fortunate enough to receive, the effects upon ourselves are based upon how you use it. Of course, we have to acquire such resources through non-harmful means; e.g. it can't be theft or selling coke.

Regardless, if we use our resources to help others, that happiness will return to us from within us. There is only one source of happiness: to make others happy and then reap the benefits via the universe's natural karmic flow.

Most people are only concerned with selfish desires such that even their charity is for their own benefit, such as their public image or tax breaks. Truly doing something to help another human being -- without any self-concern save reaping the karmic happiness return -- is truly rare on Earth, but once one tastes that sweetest of nectars, one wants nothing else, ever. This world would be a different place if we human beings judged ROI in this most compassionate of ways.