You sound overwhelmed. Five children to bring up, one still at home, and you're working two jobs. I think you need some "me" time. Would it be possible to go away on your own?
Recently I was chatting to a neighbour who has two adult children. She suddenly said "I wish I'd drowned them at birth". I said "you don't mean that" and she said she did. I was taken aback at her saying such a thing. It just shows, not everyone has a wonderful relationship with their children.
What did you you think you would have by your current age that you don't?
