I'm sure all fulltime carers will relate to this. (But stop reading now if you don't like black humour.)
At one time when I was totally burnt out trying to do everything possible (and impossible) for my son, a friend reprimanded me and insisted I take some time off to focus on myself for a change. She said, 'You remind me of that joke about the Greek widow!' I said, 'What do you mean?' She replied, ' There was this woman who adored her son, fussing over him 24/7. He finally met a girl with whom he fell in love and he asked her to marry him.She said,'I'll only marry you if you get rid of your mother and bring her head to me on a silver platter.' So the son disposed  of his mother, placed her head on a silver platter and set off for his girlfriend's house. But as he walked out the front door, he tripped and fell over. As his mother's head rolled down the footpath, an anxious voice was heard coming out of its mouth, 'Oh my darling son, are you alright?'