Relax, nobody cares

How many times did you estimate your successful deeds, done under the stressed thinking. Do you feel that stress has a direct positive influence on your success?

I've thought all my life it's like that. Without hard efforts there will be no good result. But where and how the stress took it's place in my mind I don't remember already. It's just alright and normal to worry if you pass exams or not. Everyone does it. And it feels like if you didn't worrying much - you'll have a lower chance to pass then.
What a strange habit. I bet if there was another culture, and everyone who had not passed exams were receiving ice creams, cars, stacks of money, would be quite strange for them to worry about another try. 'You were a real hero.. You've tried to pass this big knowledge barrier, big respect to you."

But we receive a huge nothing, plus a hard punishment of judgement instead. It's funny to hear that everyone has the same conditions, same questions. But just the results are different.
Who's getting higher results - looks better, smarter, more successful in life. Anything, but nobody talks about exact levels of stress that was different for each student. And that the case for a research, but nobody cares much about students mental health during the school exams, university exams, work exams. Just do the best score and move forward. You, the most stupid goes backward. That's how I was feeling when didn't pass for the first time the exams to the privileged school. But my best friend did it. How it was unpleasant. Our friendship started to crack at that exact moment when we've been checking the results. Later the next year I've passed exams and "reunited" with him in the same class, but he was already another person, less interested in further communication. Firstly talked to me as with a newcomer, who didn't pass the exams.