After trying on and off for that long of time, you have to snap back into reality. Eventually you have to do what is best for yourself, even if you have to cut off someone you use to love. Like I said, everyone changes throughout time, its unstoppable. With those changes though, you can choose to embrace them, or keep trying to live in the past.
Remember that time you honestly thought you weren’t going to survive? Well look at you, surviving and shit. Once the relief sets in, you become thankful for the lessons you learned. You are able to acknowledge what the relationship taught you and you no longer spend sleepless nights obsessing over the end.