I still feel myself detoxing from the emotional roller coaster
That's it right there. You're still processing, making sense of this, and letting go. 4 months later, there's been a certain amount of progress. 4 months from now, there will be more, and so on. Grieving doesn't move in a straight line, though. There will be hills and valleys, smiles and tears, etc.
It's been more than a year for me, and I still feel like I'm detoxing from the intensity of the r/s, too. The questions and pains of there being no real closure with this were on my mind again much of this past week. Because what many of us had with our now-exes WAS real. It just wasn't strong enough to overcome this disorder. That 'crazy stuff' tipped the balance toward breaking up. When we stopped playing along, looking into our own mirrors and cleaning up our own acts, did the 'crazy stuff' stop as well? No. Which says a lot. It's also a lot closer to the closure we're looking for just staying out of the storm. Accepting it's less chaotic now is part of this.
What are some of the deeper personal issues for you here? Loneliness, rejection, residual resentment? Chip away at that kind of stuff, it'll lead to a better sense of 'freedom' from the heaviest chains of the past.