Having worked intensively in many companies dealing with different fields of activity for over 20 years, Hakan Yücelen evaluates the problems he encounters in life in the light of his own experiences in Altı İş Üstü Hayat.

He addresses the ways of adapting to today’s rapidly changing and developing business world and being a good manager under different headings and guides those who are entering business life.

Altı İş Üstü Hayat is a guide in which a business person who has been a manager for many years shares his experiences and sometimes his mistakes sincerely, and emphasizes the virtue of “being a good person” everywhere and at all times.