Mental toughness through your phone We're the difference between good and great. Everyone knows mental toughness becomes more important the higher you go, but few train mentally. Why? Because they don't know what to do or how to do it. Enter MTI. We teach mental skill mastery through your device (any device). We've simplified the content, built innovative training tools, and added live Mental Trainer? support. Our services are available to anyone, anywhere in the world, any group size, and at an affordable price. We're really good... so you can become great.