In a bigger picture sort of way, I think most things are futile. You are born, you mark time, then you die. Therapy is not going to fix or change the past and may not help with the present or future - but it does fill the time and sometimes doing that enough can give one the space to shift around. Can a shift take place without therapy? Of course. Therapy is just one thing among many - it is not magic. I don't think anything (therapy, meditation, extreme sports etc) can make it so one does not have memory or pain. - so if that is the goal it is not particularly probable. One might find the space in one's self to change the goal. Therapy could possibly help with that as well as could any number of other things one might engage in.