Boxing is not all about fighting. Though you have to be strong, fast, and skillful, you also need a certain attitude. You have to be confident, crazy, etc. This is so that you don’t let people get under your skin or make you do something you are going to regret later.
Many boxers are very confident in themselves, which they have no choice but to be. Think about stepping inside a ring where you know the other person is going to try and basically kill you. You cannot second guess yourself. This is the main reason many famous boxers act a certain way like being crazy. They are trying to scare their opponent by showing that they are not afraid and that they are ready to do anything to win. Also they want to calm themselves down, so they do this to convince themselves that they can win.
A big part of a boxer’s personality is their discipline. This is because they do not just show up on their fight night. They train for months and months to prepare themselves. They wake up early, work out until they cannot, have a strict diet, and even put their bodies in both extremely cold and warm temperatures. Even if they are tired, sick, or even hurt, they keep going because everything that they do will count on the night of the fight.
Boxers also have a crazy amount of mental toughness. A good amount of people do not really pay attention to it, but almost every great fighter has lost some fights. Many would let them stop themselves from getting better while actual boxers use it as motivation to help them be better.
Another thing is being a boxer also means that you have to entertain people. The famous boxers do not just become famous because they win, they become famous because they put on a show outside the ring. For example, during press conferences they talk a lot of trash to each other to being more ppv to the fights.