Becoming,
Another important variable is the DESIRE for great success. Many people simply have no need to test the status quo, many people are comfortable and complacent of living a life like everyone else.
ESPN did a recent coverage about this football player, his name escapes me, but anyway..... He was an incredibly strong offensive lineman, and NFL offered him a contract for few million dollars. He said NO to the NFL, and instead became a High School Football coach, who makes only 5% a year of a signing bonus that he would get if he would try out for the NFL. When the reporters asked him what he would like to do in the future, he replied "I want to enter World Strongest Man Competition".
My best friend has exactly the same attitude. We had started talking about life and people in general, and he replied with this quote that I will never forget. He said "All I need is 70k a year, an apartment on Times Square, and 19" arms - and I'll be happy"
So what I am trying to portray is that success is relative in your own eyes, one person may think he is happy and successful if he goes against the traditional boundaries with the enormous drive that he/she has to succeed OR that person may simply settle down, and become just another mindless drone of the society, and in their own eyes they will be happy.
However you and I, and most of this board will agree that in general, a person is more successful if he/she accomplishes more than other people accomplished. Even though some people are capable of testing the boundaries, they either have no desire to do this, or their logic tells them that if they do try to face the limits then they will increase their potential to fail.