How to be that cool guy that really stands out, having the right mindset?

Be yourself. I know this, and I'm not trying to pretend to be someone who I'm not. But mindset has a great impact on your thoughts, and thoughts turn into things. So help me out, what mindset should I have? I want to take the lead in groups and with a girl I asked to the movie tomorrow night. Is overbearing confidence the key to being a man?