I'm A Mess & My Boyfriend Deserves Better

I've been a wreck for over a year after my mom died suddenly. I'm only now starting to realize the toll it's taken on my relationship. We met only a month before she passed and had been dating for 2 weeks. He took care of me better than anyone I had known for years. Emotionally, financially, everything I need he provides because he is a provider by nature. In return he's gotten my absolute worst and for some reason he's still here. I feel like I don't deserve him but he thinks that I'm just growing and I'm too hard on myself. I want to be someone he deserves but I'm at a point now where I don't even like myself. What do I do to silence the voice in my head saying I'm broken and unlovable?? I want to see myself the way he sees me... have any of you ever been here? (Don't worry I plan on getting therapy too lol)