For the last nine years, I have been a 2400 level player.  This year, I have been consistently playing 2500-2550 level for the last 8 months and winning most tournaments.  Ok, so what is my secret? 
 
No, no, no it isn’t booster or steroids or a flashy serve or a powerful smash…
 
So, what is it?
 
It is something very, subtle. 
 
It is something that most players, most spectators, most coaches, and most of my opponents have not noticed.