What do you mean by "higher life" knowledge? I think your statement is too vague. Both for here and for therapy. If standard coping skills, self-soothing, then certainly things like that are often developed in youth, and a therapist can help someone develop/learn these things.

If you're on some spiritual journey and are looking for deeper purpose/understanding then there is not one single "set of knowledge" that you were entitled to and missed out on. Each person's spiritual and/or personal internal journey is a path that you explore on your own. Certainly a therapist may serve as a guide to help you along the way but they do not nor should they "answer" this question for you.

Or is there some other meaning of this that I am missing?