I can relate to what you wrote, too. I am struggling to apply myself to study - had an essay due last week which we totally blew off - and am also struggling with being a bad example for my children. It doesn't affect my younger one so much right now, but I am such a bad example for my teen.
I have had days and days to get on with this essay and I haven't even started it (past due date).
I can't really give any advice about 'how to do it' because I know I ain't doing it right.
Just keep on pushing through with the best you can give!