My (M28) girlfriend (F27) told me she was too good for me, and I believed her and broke up with her. But now I feel lost and unsure of myself without her. How do I move on from this?

So I dated this girl for 18 months. She was a model and I'm a software engineer. She was very kind to me and told me I was the only man she's ever loved. But she was very hard on me, and I always felt like she was mad with me for something. When we broke up a year ago, she told me I was betraying her and that she was too good for me and I would never find another woman like her. <br><br>After the break up, I felt incredibly insecure and worthless. I started to question everything about myself, and I felt like I was right to let her go. But now, after a year, I can see how much she manipulated me. The people around me, my friends and family, told me she was toxic, but I didn't listen. I only recently realized how much she messed me up and made me feel like I was nothing. <br><br>I want to move on and get over her, but it's hard. I want to learn how to make myself happy and stop feeling so bad about myself. I need to find my worth again and get over her. Has anyone else gone through something like this?