too late try not to think of things outside of your own line of work or whatever it is you're most interested in to think well and profitably you must discipline your thinking keep it on course controlled he put in one field specialized now for the final item on your checklist it appears as the word and the word is attitude attitude has been called the most important word in the language William James put it this way he said the greatest discovery of my generation is that human beings can alter their lives by altering their