Quote from : The Greatest Salesman In The World Book

There are two kinds of discontented in this world, the discontented that works and the discontented that wrings its hands. The first gets what it wants and the second loses what it has. There is no cure for the first but success and there is no cure at all for the second. The very worst of my vices and bad habits will abate of themselves if they are brought to an accounting every day.