When attachment is not secure, and the sense that one's existence is only affirmed under certain conditions grows stronger, what perspective should be added to explain why a person becomes fixated on certain action-oriented beliefs?

First, we need a perspective that demands scientific verification of whether this claim is true, and we should consider what efforts an individual can make to restore attachment. The term 'attachment' tends to cause confusion with attachment in existing psychology, so I would like to use the term 'self-acceptance' instead.