40 percent of our actions performed each day aren’t actual decisions but habits. If we want to be successful we are to understand how they work, and more how they change.The destructive habits lead us to be, for example, smokers and chronic overeaters, problem drinkers and obssesive shoppers. That’s why we ask themselves about their urges. You see a bright example how violence to be prevented when the crowd gathered before Great Mosque of Kufa.For it, simply, necessary to discover the role of the kebab vendors in this event. Here, the crowd’s dynamics you consider through the lens of habits. Also you can find the case of Eugenie Pauly, or "E.P" known in medical literature. This man was suffering from viral encephalitis. As the drugs fought the disease, he finally awoke and doctors warned his wife about his memory’s loss. Working with him scientist Larry Scuire opened a new world how habits function. He and other researchers reveal the subconscious mechanisms of urges. Our conclusion is the knowledge of why habits emerge, how they change. People can eat less, exercise more, work more efficiently, and live healthier lives.Once does not make a habit!