Check out Sir Richard Branson leading with a quote from Steve Jobs in the link below:
"The ones who are crazy enough to think that they can change the world are the one who do."
Time and time again, you will hear the most successful people talk about believing in yourself and never giving up as two keys to success. If this is true, and I think the many success stories are proof that it is true, then there are only two reasons you have not achieved your own success, either: (1) you do not truly believe in yourself and your ability to accomplish what you have set out to do, or (2) it's just a matter of time (which if you don't have doubt and truly believe in yourself, you already know).
How do you come to believe in yourself to this degree? How do you become crazy enough to think you can change the world? While I doubt there is a simple answer that will satisfy everyone out there, I certainly believe that it has very much to do with finding out what it is you are most passionate about and what inspires you. When you are involved in something that you love and are passionate about, you will be better able and willing to complete immerse yourself in whatever it is, to learn everything you need to know and become an expert, maybe the best, at whatever it is. This will naturally give you confidence and lessen any doubt you may have about yourself. However, and perhaps more importantly, if you love what you do and enjoy the process of doing it, then you become less focused on an end goal. And if you are not focused on an end goal then you will not be consumed with doubt that you can actually achieve that end goal. This goes back to building a wall (http://theaaec.blogspot.com/2013/06/dont-set-out-to-build-wall.html). If you love building the wall and the process of laying each brick, then you are not focused on the goal of completing the wall. The idea of building a wall may seem impossible, in which case you may doubt that you can ever achieve such a grand feat.
So what does this all mean, and how does it relate to being crazy enough to think you can change the world? Being crazy enough to think you can change the world is knowing that when you do what you love and are passionate about, when you give the best you have to offer to the world, then you are in fact having an impact and changing the world already. There is no doubt. There is no fear. Because there is no goal to be afraid you cannot achieve. You are already achieving it, one brick at a time. So go, get inspired, and be crazy enough to know you can change the world.
Read about what inspires Sir Richard Branson here: http://www.linkedin.com/influencers/20130722225611-204068115-what-inspires-me-game-changing-people-everywhere?trk=vsrp_people_res_infl_post