"For one who has conquered the self by the Self, the Self is a friend; but for one who has not, the Self remains as an enemy in hostility."
Modern explanation
As the day quiets, hold this: When you cannot master yourself, you become the person you most have to defend yourself against.
Practical application
Reflect on what you said and did when angry today. Forgive yourself first, then make any repairs.
Reflection question
What is my anger trying to protect, and is that thing actually in danger?