That's why I do this: start patting all your pockets like you're checking for your keys, then just say "sorry, I'm all out of fucks today, been in short supply lately, should have some more in tomorrow."
I try to work on my apathy but working on it means I've failed to be apathetic about my apathy. It's the muscle that only grows when you use it without thinking about using it. It's worse than Kegels.