In life it is alright to consider the possibility that you may fail.  Only those of us who never aspire to greatness need not to. For it is not the lack of aspirations which holds us back in life; it is the fear of failure to achieve those aspirations which limits our possibilities. To succeed in life, to achieve your dreams you must move forward boldly and smartly and that includes considering all the possible outcomes including failure. But do so without fear of failure do so in the knowledge that you can only make your dreams a reality by taking hold of your destiny and doing something and even if in doing something you fail remember that the successes of your tomorrow may very be built on your failures of today.