“You're a legend in your own mind.”

Simplified Meaning:

When someone thinks very highly of themselves without any real reason, they might believe they are much more important or talented than others see them. It's like a person who believes they are the best dancer in the world, but in reality, they haven't won any competitions or amazed any judges. They only think this way because it makes them feel good, but there is no actual proof that they are as great as they imagine. For example, imagine a person who tells everyone they are a brilliant inventor, but they have never created anything useful or original. They walk around as if they are famous for something great, but others know that this isn't true. This can make them seem arrogant or out of touch with reality. Instead of living in a fantasy where you are the best at something, it's better to stay humble and work hard to truly become good at what you love. People will respect you more if you achieve real success rather than just brag about it. This way, you stay grounded and build genuine confidence and recognition over time.