The book by Swiss authors M. Krogerus and R. Tscheppeler, first published in 2008 and having already gone through 14 editions in German, has been translated into many languages and has become an international bestseller for good reason. It provides answers to the main questions that any person faces, especially those who work with people: what do I want and how to achieve it, how can I make my life happier and my work more productive? In a visual, accessible form, using a large number of illustrations, the authors analyze 50 of the most optimal models for successfully resolving a wide variety of situations. Compact and easy to use, the book will become your indispensable advisor. Whatever problem you encounter at work and in life, even if you just want to get to know yourself better, this unique guide will lead you to the right solution.