Burnt out and heading to divorce.. again.

I, 30 (F), and my husband have been married for 5 years and have 3 years. For the last 2 years I have been carrying the entire weight of our household and relationship mentally and physically. I have been begging for him to go to therapy so we can get past some of these issues and start working on our relationship again.

Within the last year I have been asking him to get a new job. His current job has him gone for 12-14 hours a day and leaves me alone with the kids all the time. We can't stabilize a routine and he can't take care of himself without having to sacrifice his sleep, food, etc. He tells me he will make these changes and that it's important but he never follows through.

Recently, we had an incident with one of our pets that I explicitly said I could not handle on my own. He could have come home to help (he wasn't doing anything at work) but decided it didn't seem important enough. He got upset with me because the situation got worse because I couldn't handle it on my own. Then yesterday I was very sick and told him I needed him to come home early (4:30pm) to help me with the kids after I picked them up. I was told multiple times he would be home to help. But he didn't want to make his boss mad and ended up being at work until 6:30 instead.

I'm done asking, begging, talking, and yelling. I am tired of being let down, alone, and hoping he will change when he obviously doesn't want to. But I feel ashamed since this could be my second divorce before the age of 30. I know my failed relationships aren't only my fault and I am getting mental health help but I still can't get past the extreme guilt. If you made it this far, Anyone have advice or just helpful experiences ?