I still say - attachment, secure or otherwise, is a pediatric diagnosis. What you look at in t is whether the transference is in place, so the therapy can happen. Your goal may be the capacity to form a secure attachment with an available person. A t is not available, so maybe the best we can do is to NOT be all insecure re the t? Then not be all insecure with a regular person, THEN be secure with another secure person.
That could take forever! But seriously, isnt it enough if we just stop irritating people at our older age, and help out instead of needing help? (Talking about myself. Not that i really have plans to stop irritating people!)