Every time you sit back and hesitate, you are feeding your doubts! The key to gain confidence is action! Success gives you confidence, so take a second to celebrate a victory, no matter how small.
A simple smile you get back from a guy can make your day, so take a second to take it inside like a compliment.
Confidence has to do with power, skills, knowledge. In fact the more you know about the dating world, the more confident you feel.
If you have been there before, you'll feel less threatened as well, so practice and repeat what you already tried. The key is to shift your attitude and actually master your skills.
This does not stop you from being spontaneous and free. Imagine you would go on stage. What would you do? right?
Rehearsal! Practice your moves! Observe the tone of your voice!
Develop your body attitude! etc.
Imagine yourself in the streets of Hong Kong. How do you feel the first day you get there? Pretty lost, right?
After a week, you feel much better. Almost at home! Why, because of experience! You have been there before!
With dating it is the same.
Establish your roots in that field, master the dating skills and very soon, you'll feel totally at home in this environment.