The card came from fellow Entrepreneurs Organization member Andy Bailey, the chief executive of Petra Coach. Although the two CEOs have never met, Kerpen said in a 2014 LinkedIn post that the postcard has had a profound effect on him, "reinforcing values I believe in and reminding me on a daily basis of the attitudes and habits that I know I need to embrace in order to become successful."
The postcard, shown above, points out 16 big differences between successful and unsuccessful people. Below we highlight six of our favorites, plus seven others Kerpen shared with us in a recent interview.
Read on to find out what distinguishes superstars from everyone else.