oh okay! Got ya now bro! Well, this actually is very easy for you to solve...
All that a don juan is bro, is a man with a great attitude and outlook on life. A positive attitude makes you display to others that you are confident, fun, and comfortable with yourself.
In turn, when you maintain this attitude, in spite of your circumstances, you also are in a spirit of love. You love people, and love is the only thing we contain, that can master the spirit of fear.
So what I am explaining to you is, is that all you are to do is to stay positive, stay loving, and keep smiling. Love others, and this will master, not eliminate, but master your fears of trusting them.
Remember.....I cannot control the ocean, but I can control my sail.
Does this help you....if not......I can explain further?