Breaking shyness and social anxiety is not easy. It needs following thing in same order -
2. Good Nature ( Cheerful, Happy, **Being Yourself**, etc., are some ingredients )
3. Polite Speaking
4. Patience Listener
It's not easy to break the barrier of shyness & open to the world.
If any of above point is missing, it could do some damage to your reputation & bring your confidence down or any other behaviour changes arround / among your network.
Importantly, Being Social is also very very critical as it helps you in lot other ways, but that's another topic.
Start building personality based on above 4 factors to break any level of extreme shyness and social anxiety.
If you are less than 15 years , its a normal thing to happen.
Participation in school activities or sports or any group activity will change it, specially when people appreciate u or look forward to your company.
As a youngster this shyness can also come from appearance , or inability to speak in public places . DO SPORTS , sports releases hormones in our mind that make us happy and confident .
AND , if you are an adult , push yourself into situation that need you to speak. DONT always depend on your parents or colleagues or siblings . Start with ordering a HOME DELIVERY or call to customer care for your phone bills
AND finally , shyness in Yoga terms comes from low energy in heart chakra and Manipur chakra (heart and throat centres)
TRY DIAPHRAGM breathing (google it) , PRANAYAM (KAPALBHATI specially)
and spine stretches . They will give you good control over your emotions and shyness
IF you start today , you are already better everyday