Learn how to become one

I was in an 8 year abusive relationship that started in high school. I was physically, mentally, and sexually abused. I got out of that relationship about about 2 years ago. I started dating a man a little over a year ago who is amazing. He is the most supportive and attentive person I have ever met. He is helping me get through the trauma and mental health repair. I love him more than anything in my life. I dont know how to stop being a victim. I apologize constantly and dont stand up for myself. He is trying hard to make me more assertive and sure of myself. He wants to see me happy and emotionally happy. How do I make myself more assertive? He wants a partnership not a dictatorship. I want that to but do not know where to start. Ideas?