If you watch the end of Bojack Horseman you see how Diane has come to terms with herself. With the relationship she had with Bojack and how she felt responsible for him and that letting go of that responsibility made her happy. That's how I've felt with this whole divorce. It's hard to let go. It's difficult to let go of someone who was bad for you but you feel responsible for. It's hard to stop taking care of someone who isn't a bad person, but who makes you unhappy. It's literally one step at a time. It sucks, but as the saying goes, "this too shall pass."
