Wear a smile
A pleasant appearance is one of the greatest methods to demonstrate that you are approachable and friendly. When you greet someone with a smile, it suggests that you are glad to see them and enjoy their company. This can help you break away from your shell.
Even though your thoughts are eating you alive at times, talking to someone and smiling is an excellent method to deal with it. Your thinking will slow down when you speak, allowing you to relax.