Exactly, it doesn't have to be done and final. My T has some long-term clients who just come back to him periodically for "tune-ups." Or some who will come back to deal with something that came up in their life. Pre-rupture with ex-MC, he had told us that as long as he's still practicing, we were always welcome to come back, even if it's 15 years from now. (I assume that still technically holds? But I wouldn't go back to him at this point.)