What are some ways to evaluate someone's intelligence?

Do You Often Succeed in Achieving Your Goals?
Ordinary people are always driven by the motivation of others, who often fool them by telling things like 'nothing is impossible', 'you can do anything in your life', 'always be positive and optimistic', etc. Intelligent people know themselves so accurately that they know exactly where they are good and where they are not. They strive only for goals that are within their reach and their chances of success are reasonably good. This way, their successes are always more than their failures. How can you be called intelligent if you fail in achieving what you want in your life? Even when an intelligent person fails, he learns from it and makes it a stepping stone to success.