Brian Tracy, one of the top professional speakers and sales trainers in the world today, found that his most important breakthrough in selling was the discovery that it is the "Psychology of Selling" that is more important than the techniques and methods of selling.

One of the seminal management books of the past 75 years, The Fifth Discipline is an international multi-million-copy bestseller. Written in an engaging and accessible way, with diagrams and illustrations, it will change the way you think and therefore way you and your team grows and develop. In the long run, the only sustainable source of competitive advantage is your organisation's ability to learn faster than its competitors....

'Senge explains why the learning organization matters, provid...