ABSTRACT
The realization and the recognition of new opportunities, the understanding of the principles of life, and the ability to make meaning out of your life experiences are necessary if you want to find your way through life. But this is not enough. Many people stop here because they think knowledge is enough. In reality, knowledge is only the beginning. One, however, must act as well as know. I hope that the following chapters motivate you to gather new knowledge but also stimulate you to act on what you read. This is my wish for you; knowledge not acted upon only makes you unsatisfied and guilty, because you do not do what you know you could.
