This is the result of a special study and scientific research undertaken by the authors. Its aim is to show the reader how to frame a problem correctly and follow a process which will enable the right decision to be reached more easily. It also offers short-cut methods designed to overcome errors often made by self-taught decision-makers. Once the way to identify and avoid possible pitfalls has been learned - for instance, by collecting key factual information rather than relying on assumptions and by not plunging in before considering the best way of tackling an issue - confidence in one's decision-making abilities grows.