"Constancy of purpose is the first principle of success." http://ping.fm/wXBA1

It is critical to your success that you have a well-thought-out plan for your life and that you stick with it regardless of what others may say and the obstacles you encounter. There will always be fault-finders and those who attempt to persuade you that your goals aren’t worth the effort you put into achieving them. Those people will never go far, and they will be the first to ask for your help after you have passed them by. Virtually every successful person has considered giving up at some point in his or her struggle to reach the top. And many breakthroughs occurred soon after those same people rededicated themselves to their purpose. There is no known obstacle that cannot be overcome by a person who has constancy of purpose, a Positive Mental Attitude, and the discipline and willpower to succeed.