How can I heal my attachment issues and stop this painful anxiety?

So I’ve had attachment issues since I was little, and I recently started to like someone and when I think about them my heart hurts when I’m sad or happy. I think it’s a part of my attachment issues and I hate it so much. I even worry sometimes. There’s other things but I want to end my attachment issues but I don’t know how. Please help.

How can I heal my attachment issues and stop this painful anxiety?
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