eople who don't know themselves are easily side-tracked. They have no well-defined personal boundaries and no center of power. A thorough and accurate self-assessment can provide the compass we need to get and stay on track. Without a center of power and personal boundaries to guide us， there is no way we can achieve our goals because there is no way to know for sure what our goals are， or should be.
Happy， centered， well-directed people are people， who know their own core being and honor it. These are the people who have the basic tools to attempt new things， to set new goals， to persist in pursuing them. These are the people who succeed. They succeed because every achieved goal increases their faith in their ability to succeed and enables them to try greater and greater things. The happy result is a high degree of self-confidence and， with sufficient self-confidence， success is certain.
一個人最重要的品質是：信心。在人生的每一個領域，它都具有無法估量的價值。特別是在商業或任何偉大的成就當中，它顯得更為重要。不幸的是，這個重要的技能我們卻幾乎無處可學。但是，它既然是一項技能，隻要方法得當，就能培養起來。
知識是獲取信心的第一種工具。認知自身的強項和弱項，認知你想有所成就的領域。但是，隻有知識還不夠，知識隻有通過實踐證明以後，才能帶來自信。我們把所想的或者所信仰的理論，放到真正的實際中去證實，從經驗中收集數據或者反饋信息。如果反饋的信息是積極的，我們的理論就是正確的，從而采取相應的行動；如果反饋的信息是消極的，我們當中勇敢的人會改變局勢，而更多的怯懦者通常會被這些消極的反饋阻撓，停止了前進的腳步。
通過了解、理解和正確運用下麵這些原則和因素，通常可以獲得信心。
1、知識 + 經驗 + 積極反饋 = 自信。