If you're shy then it may seem difficult to talk to girls. You may feel more anxiety about rejection and you may not have a lot of confidence. You should remeber to practice gaining confidence and seeing yourself as a worthy person. Just because you are shy does not mean that you will be any less successful with girls in the end. If it helps you might find that it is easier to talk to girls online or through texting first and work your way up to phone calls and spending time together in person.
The options of social media and texting can be really helpful in breaking the ice when you don't know how to otherwise. when you are ccomfortable enough just take it to the next step. Never tell yourself you can't do it but instead set goals for yourself to accomplish your goals with girls.