I recently came across this list in Robert Karen's book from 1994, Becoming Attached. He writes that "Therapy can do many things," and then launches into a sentence containing seven semicolons. I'll break the sentence into bullet points:
Karen's list is quite comprehensive, but seems to me overly weighted toward insight and self-reflection. His last item, for example, emphasizes how facing and freeing oneself from shame allows for greater "self-exploration." This is true, but I think the real goal here is greater self-expression, more expansive experiences in relationship not just with oneself but with others and the world.
Psychotherapy can't be all things to all people, but it can be many things to many people. In addition to each of the benefits in Karen's list, the profusion of his list (and more points could be added to it) suggests that a further benefit of therapy is the strength we can gain to realize and celebrate how manifold each of us and each of our relationships always are.