Breaking up and fearful of regret

I think that my boyfriend (who I considered my life partner at one point) and I are close to breaking up. I have done thought downloads and worked on models and considered my manual, and I’m very close to deciding that I am ok with my reasons. Close, but not there. I’m really scared about making a mistake and regretting, feeling pain for myself and for him, and being alone. I feel paralyzed to take the next step (moving to my own place) and have this question in my mind – is this because of fear or is it because this relationship is worth fighting for?

On another note: we work together so I anticipate a painful fallout at work and dread seeing him there if/after we have broken up!

I would so appreciate some guidance on a model and how to manage my fear and anticipation.

Thank you ❤️