What Exactly Do You Do Ms. Cantley? Kirsten Louise Cantley, Psychotherapist, MA Northwestern University. When peopleĀ see this on my business card they often ask what exactly is it that I do. The term Psychotherapy is derived from Ancient Greek psyche (meaning ābreath; spirit; soulā) and therapeia (āhealing; medical treatmentā.) So if you took this meaning literally … [Read more...] about MINDFULNESS 101: MEET KIRSTEN CANTLEY