I've met a few females that came across as secure, but often you will find insecurity underneath it all. I don't know a woman out there that doesn't seek validation in some form. Women are the greatest natural actors you will ever meet. The most secure woman will never be as secure as the most secure man. A person that lives its life around her beauty will never achieve the level of security of a person that lives his life based on his accomplishments.
You give her what she craves in moderation. You use push/pull tactics. Give her attention, then pull away and go do your thing. For a woman to "love" you, she must miss you. If she isn't telling you she misses you and wondering what you are up to from time to time, you are giving her too much attention. You always need to keep the carrot dangling on the stick.