Like other entrepreneurs, the American young man, Danny Mayer, started a modest start with a vehicle for selling burger sandwiches in New York City, but today the vehicle turned into a famous burger restaurant, with more than a hundred and forty branches and the number is increasing. Meyer is the CEO of the Union Square Hospitality Group and is the founder of Shake Shack Restaurant. This book includes its memoirs of its professional life in the field of hospitality, but the advice it provides can be applied in any field. It is also lessons in management, as businesses are like life, everything in it is about how people are satisfied.