| − | '''The Power of Focus''' by Jack Canfied, Mark Victor Hansen and Les Hewitt was a 2001 bestselling book that covered the importance of [[concentration|focus]], [[habit]]s, [[Interpersonal skills|healthy and strong relationships]], [[confidence]], assertiveness, persistence, decisiveness and purpose in achieving success in life. | + | '''The Power of Focus''' by Jack Canfied, Mark Victor Hansen and Les Hewitt was a 2001 bestselling book that covered the importance of [[concentration|focus]], [[habit]]s, [[Interpersonal skills|healthy and strong relationships]], [[confidence]], assertiveness, [[Grit (personality trait)|persistence]], decisiveness and purpose in achieving success in life. |
| | In 2012, an updated and expanded version of the book was published by Jack Canfied, Mark Victor Hansen and Les Hewitt entitled ''The Power of Focus Tenth Anniversary Edition: How to Hit Your Business, Personal and Financial Targets with Absolute Confidence and Certainty''. | | In 2012, an updated and expanded version of the book was published by Jack Canfied, Mark Victor Hansen and Les Hewitt entitled ''The Power of Focus Tenth Anniversary Edition: How to Hit Your Business, Personal and Financial Targets with Absolute Confidence and Certainty''. |