I think we can recover more than most people, including T’s, think we can... but completely... no.
My T has a trauma history that he has done a LOT of work on. He is, IMO, very healthy emotionally... is he completely healed? No. I would even venture to say that if you asked him he would say no... that we are always healing and growing but we CAN have (and deserve) happy, healthy, balanced lives now.