I'm convinced of this: Good done anywhere is good done everywhere. For a change, start by speaking to people rather than walking by them like they're stones that don't matter. As long as you're breathing, it's never too late to do some good.
Man often becomes what he believes himself to be. If I keep on saying to myself that I cannot do a certain thing, it is possible that I may end by really becoming incapable of doing it. On the contrary, if I have the belief that I can do it, I shall surely acquire the capacity to do it even if I may not have it at the beginning.