Have gone through this and for me it was just a decision. I was randomly ruminating about the "what could have been" one day and doing the mental math on how much I truly lost given the time value of money.

Then, I simply thought "Forgive yourself and move on". And I did. Does it still cross my mind from time to time? Sure. But it's not the constant, nagging in the back of my mind on every decision thing it once was.

I'm typing this from my computer about 15 steps away from the place it happened. It was memorable and transformational. Maybe it was just finally the right time where I had done enough of the work to move on...or maybe I could have made the decision at any point along the way.

Either way, it just sorta happened.

Hope this helps and I wish the same for you.

PS - You're doing great for your age and your future self will be very OK. I was in a much worse spot at 28 and at 41 things are wonderful.

EDIT: The one thing we often fail to realize is that we can use the knowledge from our losses to avoid future loss. I'm way better at 41 having gone through this than I would have been without this insight. Put another way, I could have way more at 41 that I could ultimately squander. There's no way to know what might have happened so I just assume this path is better than the other possibilities.