What is change? It's doing what you are unwilling to do. What is growth? It's doing what you have never done before. What is challenge? It's doing what you think you can't do. What is breakthrough? It's doing what you dare not do. Ability is not something you suddenly have when you reach a certain age; ability is forged through experience and feelings. When you are asked to do something and say you lack the ability, whose ability is blown by the northwest wind? It's all about grit and doing it when there's no other way. Change, growth, challenge, breakthrough—unless you are dead or in a vegetative state—whether you are a 3-year-old child or an 80-year-old old man, you can do it. There are no age limits; as long as you do it, you have it.