Be sure about what you want from life and doubly sure of what you have to give in return.

Examine the lives of successful people, and you will find that they have paid a price that is in direct proportion to the amount of success they have earned. Close examination will almost always reveal years of study and preparation before great success is achieved. This principle is consistent in virtually every field of individual achievement -- in the arts, medicine, science, or business. Nothing worthwhile ever comes easily. As you consider your own goals, also consider what you are willing to sacrifice for what you expect to receive. You should be prepared to give generously of your time and talents long before expecting a return on your investment. Many “overnight successes” labored in obscurity for many years before they were finally recognized for their achievements. (Napoleon Hill)