Realize fears are normal. Socializing is a perfect oppportunity for rejection and no one wants to be rejected. If you start talking to someone there is a chance they may find you boring. But at the same time, there will be people who think you are interesting and fun to be with.
Do you ever feel uncomfortable in social situations, especially around people you've never met? Most people face some degree of social anxiety but there are many different levels from severe (afraid to leave your house) to mild (not a huge fan of making small talk). Here are some ways to help you deal with social anxiety:
Dealing with Social Anxiety