How can you not be shy?

Too not be shy is about changing your mindset. Shyness can be directly related to low confidence and self-esteem. If you can transform your mind so that you can think that you are above and not below anyone, you should be able to break out of your shell a bit more.
One tip here is to make affirmations to yourself. Stand in front of a mirror and speak out aloud "I am confident" or "I am no longer shy but out-going and confident" every morning, you should start to see some results real soon.