People think your success is just a matter of having a pretty face. But it's easy to be chewed up and spat out. You've got to stay ahead of the game to be able to stay in it.

This quote means that having a good appearance is not enough to be successful. To stay successful, you must be able to adapt to changing situations and stay ahead of the competition. It can be dangerous to rely solely on your appearance, because situations may change and you could be rejected. To stay successful, you have to be prepared for anything and always keep up with the latest trends and developments.