Your attitude and mind-set are very important in life and in combat.
Think about the emotions you would experience if you were attacked in violence. How will you feel toward your attacker? I know this may seem strange, but to be at your most effective and efficient performance, you should not feel anger, or any other powerful emotion.
It goes like this...
When you have an intense emotional reaction, you limit your bodily responses. Tension takes over parts of your body as you try to appear bigger, stronger, more fierce (primal animal instinct). When you are angry, your eyes narrow and you gain laser-focus on the target. This is good in athletic competition, where one-on-one action is ensured.
But on the street (as on the battlefield) you don't always know all the variables. There may be others who will join in to attack you. There may be weapons coming into play. You need to have maximum flexibility and adaptability as you work to destroy the attacker.
The solution...
Do not think (or form an opinion) about the attacker. He is not evil. He is not anything. He is simply in your way. He stands between you and the rest of your life. Do not assign value to anything the attacker does. Just go through him into your future.
When you are indifferent to the attacker, you can work freely through any attack. The point is to give yourself as much of an advantage as possible.
Take it!
