Obviously donating to orphanages etc is a good choice, but maybe the #1 thing you can do, selfishly, is travel. You don't necessarily need to be rich for that,

Obviously donating to orphanages etc is a good choice, but maybe the #1 thing you can do, selfishly, is travel. You don't necessarily need to be rich for that, but it certainly smooths out some problems, and allows you to actually choose between 'short flight' or '10 hour bus trip'. When you're traveling for leisure, often the bus is the better experience as you meet people, see the country, etc, but sometimes really not. Maybe also studying something just because you want to, without any requirement that it'll lead to a job etc.