How Do I Build Confidence?

How old you are and your mating market greatly impact the choices around doing the opportunities and things you have to do. Confidence is built one way by demonstrated performance, so for instance, I believe when I talk to a girl that I can have a good conversation with her because I've had thousands of great conversations. Here's the weird thing about confidence. You can't really lie to yourself. Your brain has this internal regulating without getting too deep into like the neuro neurology of all this sort of stuff.