The other thought I've had is that maybe I really am more of a Type 5 which is a hard type for a woman to be (the phrase "bluestocking" comes to mind) so the way I learned to function at adolescence, sexually and socially, was to act like a Type 7. There is a clear specific behavior link here for me in terms of my fluctuating desires to either dye my hair blonde or let it return to its natural color. When I dye my hair blonde, it's like I'm putting on more of a Type 7 costume for my life because I'm anticipating situations that will require more extroverted, upbeat behavior. When I return to my natural color, I am anticipating situations that require more reserved or studious, less social or sexual behavior. Right now I am feeling a stong desire to return to my natural color and a very basic cut like a bob. This is linked with a desire to simply remove "Improve sex life" from my To Do List and move some things like "Start breeding Dahlias" and "Learn more about options trading" (which reflect the Type 5 concerns of science and greed) higher up my list.
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver