First of all, it's not about being yourself. For most people, being yourself means being an AFC. It's about changing yourself, so that when it comes time to talk to that cutie sitting at that coffee shop, yourself is all you'll need. Being a don juan is not just a bunch of stupid techniques you learn from a website. Being a don juan is a state of mind. To be completely blunt, it's just a blue print for what you were meant to be. Society just threw a wrench in the machine is all.
Now, what do I mean when I say "Changing yourself" is something you might be asking. Changing yourself means you become that ****y&funny guy. You LIKE to make comments like that. For one, it makes people laugh, and two, people like you more, the funnier you are. Laughter is one of the greatest things in the World, and when you can cause it, you become saught after. You clearly see that you are the prize. A girl should be so lucky to have the chance to talk to you! Take advantage of that confidence.
I have based this on being about women, but in reality, being a don juan is simply another name for bettering yourself. You'll see that once you gain that confidence, and that charm, that you gain more. You earn that raise, or you get that phone number. Things that an AFC is afraid of. AFC's are afraid of success, because they think they will be seen as greedy. People would hate you for being successful! They would be jealous of you. Which is why you need that Don Juan mind set. You can ignore what others think, because you know that in the end, they don't matter. In the end, all you have is yourself.
So don't look at these tips as just things you can go out and do. You have to change, before you can make other things change.