Yes, there are times that caring is simply too much.
What snaps me out is usually external and, unfortunately, not caused by me. That’s because doing something about it is effortful.
If we’re talking serious anomie/detachment here, you may very well be depressed. That’s really what depression is….not caring.
Possible emotional antidotes:
1) Try thinking about what happened just before you stopped caring and deal with that thing.
2) Entertain the idea that your reason for not caring is to protect yourself from hurting. Be brave and delve. Then, eat vanilla ice cream (Dean’s Vanilla Bean is strongly recommended).
3) Tell an angry friend about how much you don’t care and hope he/she/it will bitchslap you into a feeling state.
4) Tell a friend with emotional intelligence about how much you don’t care and hope he/she/it will drag or nag you to therapy.
5) Go to talk therapy on your own.
6) Go for drug therapy.
7) Get shock treatment.
8) Get a dog. They’re more compelling (and annoying) than cats.