My most popular blog posts this year
...weren't my best ones.
As usual, the most popular music wasn't the best recorded this year either. Same for the highest-grossing movies, restaurants and politicians doing fundraising.
"Best" is rarely the same as "popular."
Which means that if you want to keep track of doing your best work, you're going to have to avoid the distraction of letting the market decide if you've done a good job or not.