We ended it mutual but it still hurts

Me and my partner met in highschool but never dated until years after that. When we did I had a child and she was going through college for her degree. Even though we were on different paths we found each other and we started to date. It was a rocky start but it got stronger (or so I thought) the problem here was I didn't communicate properly to her or myself. I acted on pure emotion and letting them get the better of myself. She guided me but ultimately I was the one that should have been pushing myself and doing it for myself. We had a house a dog and just my child but I wasn't giving my all. We ended it this week and it was hard to talk about but now dealing with it and thinking about what I could have done different is eating me up. We aren't bad people and we all struggle with our darkness, it's up to us to take a step into the light and find that happiness... unfortunately shes gone and i need to just focus on myself and my child but its really difficult