A Practical Guide for Improving Your Observational Skills
This is a book about improving observational skills and gets inspiration from Edward de Bono's Six Thinking Hats technique. The book proposes that anybody can considerably improve their observational power by proper practicing.
The author proposes six approaches to observe around us. These can be used singly or in combinations in different orders according to situations.
I'm not sure about the practical value of the techniques detailed in this book. But like every book of self help nature, I believe just knowing the technique alone can make a change in our outlook about seeing the world around us.