You can’t help anyone if you burn yourself out.
However damn privileged you are, however much you want to stand in the way of the hits for folks who can’t, you step out of the damn shield-wall and get yourself patched up if you’re hurting – there’re plenty of other folks who can and will take your place.
Come back when you’re fresh, come back when you’re healed, and come back when you’re not breaking your own physical or mental health trying to fix the world.