If you use Pinterest or read women’s magazines or websites, you may have come across this concept: Turn around all the hangers in your closet. After you wear something, hang it up with the hanger facing the other direction. You will easily be able to see which clothes you’ve worn and which you haven’t. After six months or a year, donate or sell any items you haven’t worn.
It’s not a bad idea, but because I fully Marie Kondo-ed my closet last year (more about that later) and am generally pretty good about regularly purging clothes that are in poor condition or don’t fit well, this concept didn’t seem all that useful to me. But it sparked a slightly different idea.