I think if I could just activily help two people to a good life they wouldn't have had through my inaction (not including myself or family), I will have lived a good life.

If I could help ten people to a better life than they would have had through my inaction, I will have lead an OK life.

If I can not harm any more people in the rest of my life than I no doubt have, I have a responsibility in life to do so. Or at least keep trying.

These should be goals anyone can achieve, and should strive for, right?