This book is a translation of the best selling Dutch book 'De Vork'. It has become a useful tool in many educational and professional settings to structure well-formed development of individuals, teams and organizations. Together with Jeroen van Swaaij at Pen & Sword Translation Services (www.penandswordtranslation.com) we produced an English version of my particular writing style. This collaboration was a big adventure in finding ways of expressing ideas. I am happy with the result and I hope that if you find unusual expressions, you will forgive me, and perhaps eventually send me an email with your suggestions. The name of the Fork model came about by accident during a training course, the very first course in Development-framed Coaching in the Netherlands, back in 2007. I am still grateful to all the people who took part in the creative process we built up together. Other groups have been part of the process as well. They have been the 'lab rats' for to be surrounded by people like my beloved colleagues in our company. They help me carry all of this. And last but not least, I have my two gorgeous daughters: 'Rud, when will it be finished?' But why finish; every ending is a new beginning and development never stops, there is only breathing in between rudy@ecologize.net www.ecologize.net