Humans can be so poweful if only they use all of their brain?

This is true from what i have heard. Humans only use part of their brain, thru the third eye also is where people say spirituality is perceived. however my question is if we used most of our brains or all of it would we cease to exist the way we are now, our bodies and functions that we rely on may have to adjust so tremendously that our mental capability would also change also.. would that person go crazy or seem crazy? If your can read any books please try "A Sorcerers Crossing" by T. Ablar. I do believe in opening up our brains to see more.. a good way to do this i have researched and done myself is to be extremely calm, be open-- don't worry! trying not to be more positive then negative, be nothing! you become more open to things and ideas that may perceive as negative or positive, use your will to filter out what will help you to grow as a soul and what will hinder your growth. answers will come in many forms.. be aware and be perceptive, but don't dwell on anything!... it also helps when helping others to clean out your own attic before you can look inside someone Else's.. fears, memories and hindrance's. good luck friend. hope this helps.