You know what you want and you believe you deserve it.  You are not afraid to talk to people you are attracted to.  You don’t let anyone treat you badly.  You don’t feel the need to brag about yourself because you comfortable with who you are.  You don’t feel the need to lie to impress anyone.  If a woman doesn’t like you, you let it go.  You don’t dwell on it.  You are hot.  Yep, women want you.  It’s that easy.  Confidence shows in your posture, your tone of voice, and your style.  You smile.  If you don’t have it, fake it and you soon will.

A Note on Bragging:  Bragging about your job, size, car, or talent is almost always a turn-off.  There are exceptions.  Informing acquaintances about promotions, accomplishments, or raises is okay as long as you don’t dwell on it.  Don’t announce it to strangers.  You can tell someone what you job is, if they ask, but make it short.  Ask them what they do first.  Be interested.  Don’t rush into telling them what you do; wait for them to ask you.  Never talk about money with a girl unless she is a prostitute or obviously otherwise for sale (i.e. if she is digging for information of this sort beyond the standard “are you gainfully employed” questions).   Sexual bragging, on the other hand, can be a big turn-on if done exactly right.  The problem is that it is almost never done right.  It has to be subtle or it has to be immediate and brash; in between will never work.  
Most importantly, it has to be true.  If you lie, she will crush your ego and tell all of her friends.