I'm glad you are enjoying school. Having a personal trainer sounds great, but yeah I bet you'll be sore!! I'm signing up for a yoga class next week. Should be fun and less painful. lol
You are doing well to focus on yourself and stay out of H's drama. He needs to figure out how to deal with his own life and choices. This week my H too was complaining about his job. Said he might be happier "flipping burgers" I told him he might and sorry he was having a hard time and left it at that.
I used to jump in to help H with the kids when he would get frustrated (still do sometimes). I'm trying not to. I'm glad you are letting him find his own way with D7. I need to do the same.
Hope you keep enjoying yourself and all your new activities.