THAT moment , the one that s caused me so much stress and anxiety and happiness . I ' m always telling myself that I ' m over it or that I ' ve moved on and then moments later I find myself rethinking about it again , about this person , about how we could have been happy . Nope . I bought this book at Borders today , Evolution 's Rainbow .

Question: What may be the reason they are having such a hard time letting go ?
Answer: They thought they would be happy with them always .None of the above choices .They are looking for external sources for internal happiness .They thought that they would make them happy but they did n't .