You need boredom. A lot of it. Start by going on walks without music. No stimulation. No distractions of any kind. If you learn to sit with your own thoughts, for long enough, in time they will start serving you. You'll start having ideas once again. You'll start developing an extreme sense of clarity that will shift you into the next stage of your life. All by being bored, which is pretty insane.
6. The grief of a relationship that ended before you were ready: Even if you know it was the right thing. Even if you can list every reason it could not work. Even if you are the one who ended it. There is still grief in the closing of something that once meant everything to you. People expect you to be fine because it was the logical decision or because time has passed or because you seem okay. But grief does not follow logic - you can know something was not right for you and still mourn the version of your life where it was.
Unpopular opinion:
If your relationship succeeds only because one person keeps apologising, compromising, communicating, and forgiving...
You're not in a healthy relationship.
You're in a one-person relationship.