The true key to mental development is not how much of your brain you use; it is how well and how often you use your brain! Although experience, training, injury or disability may limit our mental capacities, our real potential to learn, grow and fill the brain with useful information may be far greater than most of us realize. And we reach that potential by hard work!
One danger of the “10 percent” myth is that it can distract us from how we are using our brains, as if “more” mattered more than “better.” God’s word gives us many inspiring principles in this regard, such as the Apostle Paul’s admonition, “Finally, brethren, whatever things are true, whatever things are noble, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report, if there is any virtue and if there is anything praiseworthy—meditate on these things” (Philippians 4:8). Are you using your brain to better yourself? Or do you dull your brain through drugs and empty entertainment?
God has given you a brain—the organ through which your mind operates—and He expects you to use it wisely and profitably. And He has given you even more than that! God has also given Christians a way to exceed the limits of the physical human mind and brain, not through human effort or metaphysical dabbling, but through the gift of God’s Holy Spirit—which connects the human spirit to wisdom inaccessible to carnal mankind (1 Corinthians 2:10–16).
Article Appeared @http://www.tomorrowsworld.org/magazines/2013/jul-aug/the-ten-percent-myth