Plastic Ball

The ball made of stubborn material
The ball that was constantly kicked, not at a goal but just because
The ball no longer round, because it got sat on, bent out of shape by pressure
The ball that still rolls because of its ability to hit the edge not burst, bounce back
The ball mended countless times with many weaknesses
The ball no longer rolls because it is kicked but because it has the wisdom to not fight but go with, and maximise potential as it moves
Played on many fields amongst many players and still rolls