I'm not ashamed to admit to a level of OCD. In fact, it's probably what gives me the attention to detail and fastidiousness to be good at my job. It can also be a PITA.

Having folders in my solution explorer jumping from 2019 to 2021 bothered me. More than it should. First world problems, I know, but it probably drove me to solve the puzzles faster.

And to not embark on another year's ones until the previous ones were completed.