Anxious attachment style

I was wondering if someone could help me or someone who was like this and found a way out. I have anxious attachment style every time I’m in a relationship I always feel like they are going to leave me for someone else or they can do better. I’m always anxious they will cheat on my. Every time I see them on the phone I’m worried they are texting someone behind my back and I always ask to see there phone. When we go out I get jealous if I see him talking to another woman and I feel insecure in my relationships when I’m in one. Is there anything I can do to stop me from trying to look at his phone or to feel confident in myself so I’m not always worried I’m going to get dumped for someone else?