There is no security on this earth; there is only opportunity.

Douglas MacArthur

"Each problem has hidden in it an opportunity so powerful that it literally dwarfs the problem.  The greatest success stories were created  by people who recognised a problem and turned it into an opportunity." 

 Joseph Sugarman

“Spend 80 percent of your time focusing on the opportunities of tomorrow rather than the problems of yesterday.” 

—Brian Tracy

"What is opportunity, and when does it knock? It never knocks. You can wait a whole lifetime, listening, hoping, and you will hear no knocking. None at all. You are opportunity, and you must knock on the door leading to your destiny. You prepare yourself to recognize opportunity, to pursue and seize opportunity as you develop the strength of your personality, and build a self-image with which you are able to live -- with your self-respect alive and growing."

-- Maxwell Maltz

"The golden opportunity you are seeking is in yourself. It is not in your environment; it is not in luck or chance, or the help of others; it is in yourself alone." -- Orison Swett Marden