The fourth enemy within is worry. We' ve all got to worry some. Just don' t let it conquer you. Instead， let it alarm you. Worry can be useful. If you step off the curb in New York City and a taxi is coming， you' ve got to worry. But you can' t let worry loose like a mad dog that drives you into a small corner. Here' s what you' ve got to do with your worries： drive them into a small corner. Whatever is out to get you， you' ve got to get it. Whatever is pushing on you， you' ve got to push back.
The fifth interior enemy is overcaution. It is the timid approach to life. Timidity is not a virtue， it' s an illness. If you let it go， it' ll conquer you. Timid people don' t get promoted. They don' t advance and grow and become powerful in the marketplace. You' ve got to avoid overcaution.
Do battle with the enemy. Do battle with your fears. Build your courage to fight what' s holding you back， what' s keeping you from your goals and dreams. Be courageous in your life and in your pursuit of the things you want and the person you want to become.
我们的勇气并非生来就有，恐惧也是如此。有些恐惧可能来源于你自身的经历、他人的讲述或从书上读到的东西。像半夜两点独自走在城中的危险地段，这样的一些恐惧是可以理解的。只要你学会避免这些情况，就不必再惶恐地生活。
即使是最基本的恐惧，也会让我们的雄心壮志彻底粉碎。我们的财富与情感皆会被恐惧所摧毁。如果不加以节制，它就会毁掉我们的生活。恐惧是蛰伏于我们内心的众多敌人之一。
让我跟你说一说我们面临的其他五个内在敌人。第一个敌人是冷漠，在它袭击之前，你必须先下手为强，否则打着呵欠懒洋洋地说：“啊哈，就这样吧，我就随波逐流吧。”这是多么可悲的弊病！你永远无法漂至山顶，这就是随波逐流的问题所在。