golden_eye, you focus too much on having someone accept you to the point where you take on individuals who are so needy that they let you down and take advantage of you.
You end up being put on these kind of individual's patsy list and that NEVER leads to feeling self fulfilled. You end up in a caretaker/codependency role in an effort to "feel" like you have a purpose and this is most likely something you "learned" to do unknowingly in the environment you grew up in.