Whats the Meaning?

What the meaning of the quote “To give anything less than your best is to sacrifice the gift” to me is, that when you do any sport, or school work if you don’t try your hardest and give it everything you got you are sacrificing the gift that you were given. If Usain Bolt didn’t run fast and only went have speed he would not be breaking all the records he is breaking, he would just be going half speed he never would have made it to the Olympics. Why not just use the talent you were given and do the best you can, people can see the talent you possess and when you don’t use it and will become angry or irritated that you are not using it, when they have to work hard to do well in the sport they may wish they had the talent in.