Whatever the Mind Can Conceive and Believe, the Mind Can Achieve
When I was still in high school and felt very lost and confused during my teenage years, I found two people who have helped me tremendously with their inspirational teachings.
One of those people was Dale Carnegie and the second one was Napoleon Hill.
Later on after reading their books I have also found some of their videos.
In this video Napoleon Hill, one of the greatest motivational speakers (for me at least), is explaining the power of your mind and the things it CAN do if used correctly and consistently.