I've done two 366 photo-a-day projects (the first was in 2012, the second was 2020). Last year was simultaneously the worst and best time to do one; worst because of obvious reasons, but best because it was a quarantine monotony barometer ("monotometer") and helped me plan my days so that at least one interesting photographable thing would happen. I definitely felt burnout and oversharing, but I'd probably do it again and just keep the photos in a private album or print them immediately.