From what I see a lot of people are scared about this.
Me too, in a way.
What would be the worst scenario if you talk to a stranger? Will he/she kill you, hit, think you are funny?
You are talking to us now - we are also strangers, generally speaking)
It's just amazing what walls of fear we build in our heads - I am extremely good at it myself.
Keep your chin up. This world is not a piece of cake, but still not a bad place to live in.