Your purpose explains what you are doing with your life. Your vision explains how you are living your purpose. Your goals enable you to realize your vision.
Intelligence is an interesting word. It is also something which, in my opinion, is misunderstood by many people. There are those who believe that we go to school to become intelligent. Or, the more experience a person has on a particular job, the more intelligent they become.
When you use an excuse for not accomplishing something or not completing a project, you are actually giving power to someone or something outside of yourself. Regardless of what happens today, absolutely refuse to use an excuse to get off the hook.
