Have you ever tried journalling? Write a clear description of the kind of relationship you would like, in great detail, the mutual respect and kindness, the relaxed, secure feeling you get when together. Also journal how you want to be, outside of a relationship - independent and self confident, with a healthy self-respect, self care and self-compassion, free to express your beliefs, to develop strong bonds with friends and family and colleagues as well as with a partner, creating space and energy to acquire skills that enhance your life, whether in your career or in your leisure time.
You could also make lists of all his weak and unappealing habits and characteristics and all the freedom you have when he's not around (to watch programmes you love that bore him, cook food you enjoy that he dislikes, listen to music that's your taste not his, see friends he doesn't get on with, spend time doing stuff he doesn't enjoy, decorate your home in a style that's entirely and precisely to your taste.
Basically, use journalling to fill your head with clear visions of what a positive, healthy life looks like, and then you will see there's no room in that life for someone who messes you around.