On a self-graded quiz, the only person you can cheat is the one holding the pen.

Any honest measure of yourself exists to tell you where you actually are. Adjusting it gives you a better number and worse information, and the number was never the thing you needed. This is how people end up surprised later, having studied the wrong things with great confidence. The cost arrives late, which is why the trade feels free at the time.

Wherever you track your own progress, look for the place you are quietly generous with yourself. Mark it honestly once and see what the real picture looks like. It usually stings for an afternoon and saves you a month.