How to heal from separation anxiety and codependency, especially from romantic relationships?

I am going through a break up and am trying to do a bit of self discovery/exploration. I’ve noticed that this might be a trend of mine, which can contribute to my anxiety and depression. Does anyone have any tips or suggestions on how to heal and work through separation anxiety and codependency? Now that I’m single I am having a really hard time being comfortable alone. Coupling this with normal sad emotions from a break up makes it feel that much harder. Am I alone in this or is this normal to experience: to a degree?
How to heal from separation anxiety and codependency, especially from romantic relationships?
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