Thanks for sharing.
I bet if you think a bit, you're very capable of an _insane_ amount of good. Imagine a 12 year old in your town whose single mom can't afford a laptop. Maybe he or she, this 12 year old, is more capable than even you.
You find that kid somehow, maybe they're your neighbor. Maybe with a gentle push like an old book and your old laptop... you create a great thing.
Maybe it only takes a compliment. Some dumb freshman you're TAing a class for has a rough time. You reach out, buy them lunch, talk about your struggles and success.. who knows, could really fire them up.
I bet the universe will show you a few opportunities in the next month. Don't ignore your purpose that's right in front of you, not to say you are ignoring it! Just trying to be encouraging.