I have always been fascinated by, and tried to live a life of Excellence
For years I have used the mantra  Committed to Excellence.

My company Commitex Enterprises, the name Commitex that I use 
in my businesses come from Committed to Excellence (Commi-T-Ex).

One of my favorite quotes states, "Every Job Is A Self-Portrait Of The 
Person Who Did It. Autograph Your Work With Excellence."

The will to win, the desire to succeed, the urge to reach your full 
potential... these are the keys that will unlock the door to personal 
excellence. - Confucius

Excellence is an art won by training and habituation. We do not 
act rightly because we have virtue or excellence, but we rather have 
those because we have acted rightly. We are what we repeatedly do. 
Excellence, then, is not an act but a habit. - Aristotle

If you are going to achieve excellence in big things, you develop 
the habit in little matters. Excellence is not an exception, it is a 
prevailing attitude. - Colin Powell

Excellence is Consistently Perform at a High Level

Excellence is being able to perform at a high level over and over 
again. You can hit a half-court shot once. That's just the luck of the 
draw. If you consistently do it... that's excellence. - Jay-Z