I am sorry you're hurting. I am sorry you feel like you're worthless. The truth is, you're not worthless. You're not. You're not you're not.
You are going to break the cycle. You already have. You're doing it. When you reach out to others for help, when you share your pain, when you read other suffers words and feel empathy, offering kind words, you're doing it.
It's hard. It sucks. It isn't fair. BUT YOU are doing it. I applaud you. You aren't worthless. You are wonderful. I am glad you are here.