Excellence can be defined in two ways.
With God, it is a perfect state.
With human, it is an improvement process.
Excellence don’t come cheap, you have to strive for it.
The word strive is used as it relates to sport or competition.
To strive means to struggle; The struggle is not altogether vile or vain word. It means a violent effort or vigorous contest. i.e. to contend with an adversary.
To make effort.
It is human effort that produces divine effect.
To push forward; to press through.