In some cases, the moment of frustration may not come at the beginning, but still be predictable. When I was learning Chinese characters through flash cards, for instance, I’d always feel an urge to give up whenever I couldn’t remember the answer to one of my cards. I knew this feeling was temporary, however, so I added a rule for myself: I can only quit when I’ve remembered the most recent card correctly.
You literally wanted to give up at the most useful point for long term memory
