I am that way, also. Think any time for myself isn't "productive" because there must be SOMETHING of more importance that needs doing. By almost never taking time for myself & always doing too much for others, & doing work that was too hard for my body, both at work & at home, I have now ruined most of my muscles & joints & have been disabled since age 53. TAKE TIME FOR YOURSELF!!! Even if it's to do absolutely nothing. You'll be better off in the long run & happier, too. Start small, say an hour a day. & work up to 4 hrs a day for yourself. Give up your least favorite volunteer thing. I don't think you'll ever regret it.