Learn to practice peace, because if you have no attention you have no retention. Most people swing from one emotional extreme to the other. Concentration is about learning how to stay centered. When you concentrate your power, you can achieve anything. Imagine your mind is a flashlight. Most people allow their flashlights to jump all over the place, diffusing the light’s power. You want yours to stand still and shine brightly. Nothing outside of you is going to fix your concentration; it is an inside job.