On an individual level, my therapist matters to me in the sense of being significant in my life.

In a larger sense, making an impact on the "wider human community," maybe? I don't think the work that she does with me is going to change the world (insert heart and rainbows and puffy clouds here). But the work that we do together has an impact on the way I interact with the people around me, and likely my career path. Because of the work I've been able to do with her, my family is stronger and healthier and my friendships are deeper, a kind of ripple effect.

Maybe all of those little microimpacts added up across people and therapists add up to some kind of significance that actually does have an impact on the world, or at least mitigates the effects of some of the horrifying things humans can do to one another.