I don't know exactly how old my T is, but she's probably about 20-25 years older than me. (I know that I was 5 when she earned her PhD.)

The age thing was pretty important to me, as was the gender. (I've got major mommy issues to work out! )

It was also fairly important to me that she be a lesbian, as I am. I live in a city with plenty of straight, gay-affirming therapists, but I appreciate how being alike in that way cuts out a whole lot of explaining and/or wondering if my T knows where I'm coming from. Knowing that makes me think that I'd probably also have felt the same about considering a male T, and also someone who was younger than me.

Anyway, older/female/lesbian T works well for me.