What is the difference between you and someone smarter?

Do you think it would be worthwhile to learn what is the difference between you and someone really ‘smart’? So you can become smarter, maybe even really smart?

Someone really smart makes fewer mistakes in every area of life. They know what to take personally and what not to. They know how to spend their money. And they also make smarter choices. They get paid more because they spend more of their time with what produces value. Etc. Etc.