I work for two different non-profits for people/kids with cardiac illness (A certain set of not-so-rare diseases) and raise seeing eye dog puppies. It's not enough.
Maybe this is just because on the relative scale of My Heart Is Black, Cold, And Made Of Stone to My Heart Is So Squishy-Soft And Bleeding It Needs An Ambulance, I'm a little closer to the former extreme, but... Two non-profits, seeing-eye-dog puppies, trying to get a job in research? If I did that I'd feel strung out and overinvolved (out of all these kinds of things, I am only involved with the last one, and that's because it's my chosen path in life). And you've mentioned in the "Do you want to learn" thread that you're seeing a therapist. You need some emotional armor and maybe a stronger sense of self-preservation.