I think it is time -or should I say about time- to do things for yourself. You have done already so much to help others in so many ways. I can picture you being stretched out in all those different directions depending on who is calling. My own mother did the same in her life and I always keep her as an example in my mind, which helps me "draw the line" even though most times it doesn't work....
Being such a giving person these days has become so rare....that it almost startles people when they come across it. Sad isn't it?