“If you want to achieve excellence, you can get there today. As of this second, quit doing less-than-excellent work.” -Thomas J Watson
The quote is saying if there is goal to be met then everything possible should be done to achieve this goal. Never give less than 100% or then that is what you represent as a being. The person who gives the bare minimum but knowing he/she can achieve something greater is known as an underachiever. Underachieving isn’t frowned upon due to the fact that they “tried” but that just builds a habit that soon will become of life.