DNA. Confidence, or lack thereof, at the most basic level is simply luck of the genetic draw. Hereditary, even. The book goes way in depth on the science behind confidence...which I can't begin to relate as efficiently as Kay and Shipman did... but suffice it to say, my mind was officially blown. Turns out, as a woman, I'm disadvantaged in the confidence arena. I may have suspected this based on personal experience, but I was surprised to see science back it up. It's like we are genetically engineered for lower confidence! Why?
1. We produce 52% less serotonin than our male colleagues. Serotonin is a "relax" hormone that let's us keep our cool. Or not.
2. Testosterone. Again, we have less, which makes us less likely to take risks.
3. Neurons. More. At any given moment, women have 30% more neurons firing than the guys around us. Our minds are always active, causing us to overthink, overreact, over everything! Ugh how do we even get anything done sometimes?!
4. Funny thing called a cingulate gyrus. It tends to be larger in females. Kay and Shipman call this little brain part the "worrywart center". Bigger means more anxious. All that anxiety prevents us from stepping outside our comfort zone as often as we'd like. The less we do that, the more we hold ourselves back.
I don't have the ability to test my levels and brain function, so I can't compare my results to other people. I had to start with the basics, though. And this isn't even half of it! (Read the book). Other sources of confidence in the book touch more personal topics. Prepare to dig deep next few blog posts!