Dear Mr. Ichak Adizes! I cannot but express my great gratitude to you for your works which help people to better and more fully orientate themselves in the life space, in all its manifestations!!! I am 68 years old, I am quite successful, I have devoted 25 years to the business of building and repairing houses, managing my companies. Too bad I haven't read your works before, they would certainly help me to be more prepared for the challenges of doing business. Also for several years I headed a non-profit organization and unfortunately not all of them did a lot as described in your works. I can say many delightful words to you for your work ("Mastering change", "How to manage in times of crisis") and I am afraid one day is not enough! Thank you so much again. With deep respect, Georgy Komissarov. Saint Petersburg.