Hi. I am just an amateur photographer and started to develop an interest in street photography. Unlike landscape or posed portrait where you can duplicate the shots, street photography only gives you a split second decision to make or break an image. My favorite line was from one of my favorite photographer, Henri Cartier-Bresson:-
"There is a creative fraction of a second when you are taking a picture. Your eye must see a composition or an expression that life itself offers you, and you must know with intuition when to click the camera. That is the moment the photographer is creative, "Oop! The Moment! Once you miss it, it is gone forever."