A person's ability exists in his mind. If someone is more capable than you, that is due to his ability. When you do not have any minds, you can solely focus on the work that you do and this is when you become capable.
You cannot be efficient if you have too many thoughts while working; since these thoughts will take away from your concentration and distract you, you will not be able to work properly.
Therefore, if you eliminate your mind that has countless false thoughts, you will have the true mind. Since your mind is truthful, you will become efficient. When your mind becomes the true mind, your curiosities, unresolved questions, and doubts will disappear and you will come to know all the ways of the world.