I'm so happy to see this post! I really respect you for your concern.
All the advice that you have received here is very good, and could bring you the fullfillment you are looking for but I would like to add that sometimes people tend to overlook opportunities that are close at hand.I'm reluctant to speak of myself and my wife in a way that might be considered self aggrandizing, but since my contributions are really very small compared to others and this medium affords anonymity I'll indulge. I have a next door neighbor who is older than I am and his health is worse than mine so in the summer my wife and I try to do the majority of his yard work for him and help out in some small way. We both have our own health problems and we and our neighbor both have a little over an acre, so it is a bit of a chore to keep up with but I know that he and his wife are really thankful for the help. We live in the country so there many who have limited means. We have given away a ridding mower to a young couple who really didn't have enough to spare for simple needs let alone what some might consider a luxury. I sold a 25 ft. camper to another, for a little bit of nothing,the guy said he would not have had the opportunity to enjoy this type of activity with his family if we were not so generous. The same with a car. 100 dollars when I could have easily gotten 2500. And it was in very good shape. I feel very embarrassed to "crow" this way and I hope you understand that I am relating this info not in an effort to build myself up but to make the point that so many times in our everyday life we overlook opportunities to make a difference right where we live. And besides, None of you know who I am, you wouldn't recognize me if you saw me on the street. My contributions are really so small comparatively so what the heck! Just take a look around where you live and I'm sure you will see something that you can do, even if it's something small like my wife and myself. It could mean alot to someone who is in need. We continue to do small things like this whenever we can and it does give one a sense of giving back to the "spirit of man", (or woman). Good luck and Thankyou!