"A mind is like a parachute. It doesn't work if it is not open." -- Frank Zappa
A mind well used is perhaps man's greatest weapon, it's a weapon so great that the greatest if revolutions ,the greatest of weapons, the greatest of forward moves, the greatest of discoveries in human history have all come from the mind of men.
But there however is one catch, your mind must be open and you must believe you can really achieve those things. It sounds so cliche but it really is as simple as that. Many look for complex ways to get things done but the greatest things in life have pretty simple answers.
Just like you open a parachute for it to work, then you have to open it up. Likewise for your mind to help you achieve great things, to take you beyond heights you have dreamt for then you have to open it up.
Read vastly, open up your mind to learn different things, learn to question even those things you truly believe in, be open to changes and contrasting ideas and schools of thought. That's the way to open up your mind and make sure that you fly my friends.
Keep doing big things and keep growing your minds and expanding the plains of what you can and cannot do. Salud.