Take up one idea. Make that one idea your life - think of it dream of it live on that idea. Let the brain muscles nerves every part of your body be full of that idea and just leave every other idea alone. This is the way to success.
Champions aren't made in gyms. Champions are made from something they have deep inside them - a desire, a dream, a vision. They have to have the skill, and the will. But the will must be stronger than the skill.