Stay Vigilant!

"After Victory, Tighten Your Helmet Cord."
- An ancient Samurai maxim

This is what Ishida Mitsunari, a samurai leader, told his victorious army after the battle of Sekigahara, a landmark event that brought an end to centuries of civil war.

The saying's meaning is simple:
Just because you won today, it doesn't prevent a new challenge from arising tomorrow.
Be vigilant.
Be alert.
Be watchful.