Thought I would post the outcome of this for anyone who is interested.

I emailed my therapist with my concerns at the start of the year. As I had a final session booked and paid for he suggested I come in for that and we could talk about if there was a way forward and decide from there. I did, talked about my concerns, he made what seemed like a few good suggestions as to things we could try and I agreed to continue on a session by session basis.

I had two more sessions. The second was pretty frustrating, he asked me if there was anything I wanted to talk about and there wasn't really but he didn't seem to have any ideas so I spoke about a couple of things that had happened that week. He just repeated them back to me in a nodding dog sort of way. I felt that he didn't have any ideas as to how to help me (and I don't think he liked or respected me particularly) so I called time on therapy with him.

I'm now back living day to day, enjoying work but with my life empty outside of it, and with no idea of how to change and improve. I've searched extensively online for solutions to AvPD and have drawn a blank. Really frustrating, or depressing, depending on my mood.

If anyone has the cure - please do post it!