At what point does one cease re-charging batteries and start becoming selfish?

In order to affect the world around us, we need to have the energy to give. When you burn out - or have no remaining energy stores, it's obvious that you need to re-fuel.

But where is the "full" line?

I constantly struggle with this question.

Have I moved on to other things, or am I just being selfish?

And if I'm just being selfish, how long can I get away with it before becoming a mockery of all the good I have accomplished?

Ugh... so few answers to so many questions.

There's one fool-proof cure - a good, old-fashioned nap!

Wake me in an hour.