Part of it is about knowing your limits though. I know I'm often unpopular for being honest but I know my limits wrt caring for my own daughter who has a disability/autism/LD and as a carer you have to think about what is best for the person you are caring for. I know I couldn't care for my daughter full time anymore, so I don't. It's better for her. She doesn't deserve someone to be ratty/patience shredded with her, so that simply doesn't happen.
It's quite simple, vulnerable people shouldn't be shouted at or ordered about. If your caring role makes you behave in a manner that isn't normal for you, it is actually very sensible to question and research alternatives or ways of making your own mental health better
I'm not pointing the finger at anyone. I know how difficult it is and I am no saint