Well it rather sounds like you're in a solid relationship that you are yourself happy in. It's a good position to be in, but since you're curious about perspective;
It's never fine breaking up. You do it because it must be done, not because it feels nice. Unless you're a psychopath and got that far without really caring for the other person.
In terms of how you move on - if that is what you are asking - you go out and try new things. You meet new people, start new projects. It hurts like hell, and you have doubts all the time, but if you're in the right lane and you're at least trying to live life, with every morning you wake up it gets a bit better.
Six months.
@hatterva Yeah I feel you
For me it was the rather depressive cushiness of it that kept me in inaction, as well as fear of things going really wrong.
Was definitely the right call, though. Haven't felt this free and happy in years, if ever.