Not every season of life is supposed to be fun. Some are for building.

There is a quiet assumption that a period which is not enjoyable is a period going wrong. Some stretches are not for enjoyment. They accumulate something you will spend later: a skill, a transcript, money, the fitness that makes next season possible. Judged as entertainment they fail; judged as construction they are on schedule.

Name what this stretch is for in one sentence and put it where you will see it. If you cannot name anything, that is worth knowing too. Grinding with a reason is tiring; grinding without one is corrosive.