I was the one who told my T I was DID. One of my parts started talking to me and knew everything about me, and told me I needed his help. Up to that point I thought he was a figment of my very active imagination, although I really did already see him as a part of me and I was aware of other "mindsets" that would take me over sometimes that even had names. But I didn't make the connection until Gnash started talking to me. I was already researching complex PTSD, because that's what I was going to t for, and so I found DID literature and it fit- it explained my whole life. And then I told my T. She was accepting of it but thought I was DDNOS (I'm definitely DID, no denying that, new T concurs). She was helpful in so many ways but with my parts, no. She didn't want to talk to any of them (and some were quite insulted by that) and didn't know how to deal with dissociation in session or how to stabilize me for trauma work. We went too fast. She really encouraged me to seek out a T with experience in DID and that was the most helpful.
Basically until my current T all my help came from my own research.

What is the most helpful thing someone has said to you?