Not all impact needs to be at-scale. Perhaps you can make a difference outside of work, and/or at a local or individual level? While the systems crowd that congregates on HN may discount this kind of "last mile" effort, it can be deeply fulfilling (we are social animals after all) and have life-altering positive effects on recipients.

I don't know if that speaks to your situation at all. Either way, I wish you (individually) self-understanding and happiness. ^__^