在7个高效率习惯里的一个概念。
由内而外，是啥意思呢？
就是首先要提高自身的素质，然后才会有输出。
将自身的这种素质/才能/习惯…发挥出来，就是里面的东西出来了：inside-out。
比如鸡下蛋，只要供给充足，到了鸡龄，而且是母鸡，自然而然的就出来蛋。当然你必须保证不让鸡知道下来的蛋直接进了人类的铁锅，或者保证鸡一定不懂得此种事情。
所以inside很重要：
This inside out approach entails
Making improvements to your character before your personality
Focusing on principles before practices
Adjusting your paradigms, or how you see the world, in order to change your actions
Improving yourself (achieving so-called “private victories”) before you can build better relationships with others (“public victories”)
