Street Photography is quick. Creativity in seconds. Be prepared, look, let yourself inspire. But then, like all photography and almost everything else in live: you have to work hard, concentrated, be open minded, to be able to score a goal.
Update Dec 2015: Learned a lot from Eric de Vries , Photographer from the Netherlands, specialising in street and Black and White. He is now Cambodian resident. Thanks a lot, Eric!