(In re: two men, middle 40's, have reached out to me in the same week, one maybe 8 years since last contact, one >15 years since last contact, to say hi and check in with the "old man".
I didn't meet either one until their early 20s. No sage then, and no sage now, but I was an older man who cared about them, and modeled for them, however half-assedly and insufficiently.
You can help someone just by being open to them, I think. You don't have to be a saint, you just have to be a listener.)