Mouse, that is so big what you wrote about taking care of yourself. It is as if finally, YOU matter to yourself.
I have been in the same situation before about glasses that your co-worker is in. For me, not wanting to use my reading glasses wasn't about not wanting to do self-care. It was about not wanting to grow old! Needing reading glasses is a sign of aging, and sometimes it can be a little hard to face up to that. But soon, his eyes will be so bad, that your co-worker will have to face facts.