Eagle,
Dotsie is absolutely right. You really need to spend some time caring for yourself, be it walking, exercising reading, or whatever. I know it sounds impossible, and I should have listened to myself while caring for my dad but I know from experience how draining all of this is on you. God, will provide the strength you need to care for Gary. You need to supply your own sense of energy to care for yourself.
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Where I've been lately