Public speaking is undoubtedly a massive anxiety builder for many, even most people. I have found those who are most comfortable with the topic they are discussing and those that exude confidence in themselves usually have the greatest chance of overcoming the fear and using it as a wonderful platform to expand and grow their business and themselves.
It all starts with a Hello. Everyone walking the streets has a story. If you start to wonder what their story is you will naturally become curious and that will lend itself to having the courage to ask the question.
Below is a link to a article published by Joseph Novick. It has useful tips on how to start and where to go after you say, Hello.