Life has seasons just like nature. A warrior doesn't see events as "good" or "bad," they just are. We attach ethics onto things. When at a high or low, stand your ground. When low, practice gratitude and patience. When high, practice gratitude, patience, and awareness. We tend to become drunk and blind with ecstacy when we're overly happy or something is going right. Maintain a sober mind and eyes whether hitting highs or lows in life, then we won't be taken by surprise by unexpected events.
