For  everybody 

Practice  mindfulness    to  have  better  concentration 

 https://news.harvard.edu/gazette/story/2018/04/less-stress-clearer-thoughts-with-mindfulness-meditation/

“In and out of the classroom, these student-athletes are immersed in a highly competitive culture,” said Denham. “This is stressful. This kind of training can develop a more-skillful mind and a sense of focus and well-being that can help them better maintain control and awareness of their thoughts, emotions, and presence in the moment.”