Welcome to Psych Central! I just made a similar post in the Relationships forum.

I found that I have spent a good portion of growing up always in a relationship. Personally I feel that it has affected my introspection and self development and worth - like I don't know who I am without a relationship. I also struggle with boundaries and communication, though I don't know how related these are.

Someone suggested therapy, another user suggested watching the movie Eat Pray Love, in which the protagonist deals with the same issue.

Hope you can find what you're looking for here.