I always take books about money with a pinch of salt for most are more or less fictitious (tips that hardly work in real life). That's not how Napoleon's book turned out to be, however. The real-life illustrations make the book realistic; exactly what one needs for self-improvement.
This stuck to date:
"I will eliminate hatred, envy, jealousy, selfishness, and cynicism, by developing love for all humanity, because I know that a negative attitude toward others can never bring me success. I will cause others to believe in me, because I will believe in them, and in myself." ~ Napoleon Hill (Think and Grow Rich)