" Despite the sale of millions of copies of "How to.." books and programmes each year, very few people take actions and put what they learn into practice. Here´s why. The "how to..." book has usually been written by someone who accomplished something of value. They then capture the steps they took to accomplish it in book, training course, or multimedia programme. Innocently, they´re sharing the symptoms of their accomplishment, but not the causes. If the symptoms are like apples, the causes are the tree that grew them. When people buy "how to" books and programmes, they´re unknowingly trying to glue someone else´s apples onto their tree, without realizing an essential fact: it doesn´t work that way! "

― Jamie Smart , Clarity: Clear Your Mind, Have More Time, Make Better Decisions and Achieve Bigger Results