LACK OF PERSISTENCE is one of the most common causes of failure in business and in sales! The good news is, persistence is a state of mind which can be cultivated, developed and grown. One of the original personal success gurus, Napoleon Hill, believed that despite unexpected setbacks in life, the one thing that you can always control is “your mind and your attitude.” This is great news – IF you put it to use! In his book, Think and Grow Rich, Napoleon Hill told a compelling tale about a m...