I don't believe in the word "normal" actually. I believe that normal is a perception that varies with every individual...my normal isn't your normal, normal for 19 isn't normal for 45, etc.
T and I talked about that alot. I believe in "average" for sure and that's what I would then use in my therapy. I would then ask, "what is average?" T could much more easily define that for me as far as thinking, etc.
I wish you well.
KD