Agora Copy Camp recommended this book. The rating is for how I'd rate the book in comparison to other books I've read.
The book follows a simple setup-plot-punchline format. While it is a short and simple story, the lesson is important. There is no shortcut to success. Think on what needs to be done and act on it. Achievement in anything is as simple as that. For an over-thinker like me, I'd do well to implement this line of thinking until it's second nature.
The key lesson is summarized in this excerpt:
"... I have given considerable thought to that very question, and I have decided that picking out the obvious thing that presupposes analysis, and analysis presuppose thinking, and I guess Professor Zueblin is right when he says that thinking is the hardest work many people ever have to do, and they don't like to do any more of it than they can help. They look for a royal road through some short cut in the form of a clever scheme or stunt, which they call the obvious thing to do; but calling it doesn't make it so. They don't gather all the facts and then analyze them before deciding what really is the obvious thing, and thereby they overlook the first and most obvious of all business principles. Nearly always that is the difference between the small business man and the big, successful on. Many small business men have an aggravated case of business astigmatism which could be cured if they would do the obvious thing of calling in some business specialist to correct their vision and give them a true view of their own business and methods. And that might be said of a lot of big businesses, too."
'Business' can be replaced with 'person' for self-development purposes. Gain a true view of yourself, decide what you want to do, make a plan on how to get there, and take action.
Avoid shortcuts(5 minutes a day to a slim figure! 10 ways to get rich quick! 15 things you can do to get women to love you!etc, etc) and gather all the facts so you can make an obvious plan to get you there.
Most of the time, the obvious plan will require a lot of work and discipline. And the obvious plan might be contrary to how 'everyone else' is doing it, like going straight to the CEO for a job. But the chances of achievement are much higher when you follow the facts.