I can totally relate. I don't have a T at the moment, but a new p-doc who I think is a lot better than my last one. She actually takes the time to listen and understand me.
But in the same sentence I don't understand myself most of the time.

I am in a bit of a rollercoaster relationship (Most of the time we are really happy, then every now and again he gets so carried away, drinking with the boys and coming home at 2AM, when he promised he'd see me at 7PM and I had already cooked supper for him) But I cannot just use this as an excuse, as I need to have the self-confidence to deal with being on my own for a few hours.

Apart from that, my mood just changes so frequently. It just depends on where I'm at, at the time my p-doc phones and asks how I'm doing. I'll tell her fine, and then 10 minutes later I feel I can't cope. How can I phone her back 10 minutes later and tell her I'm now a mess? It sounds absurd.