Yes, controlling emotions is mandatory because when you control emotions, your mind will be calm, the emotions will disappear, usually smart people lose to people who can control emotions. When you are smart but you are impatient, not sincere, you can't control your emotions, then everything will be useless. you will become an emotional person, become an angry person when you lose, become a person who doesn't want to accept defeat well, therefore we need to suppress these emotions in a small way. We can't throw away emotions, but we can suppress these emotions into small ones so that at least when we face Our problem is not feeling burdened.