My biggest stay up too late things are when my wife is out of town and I am lonely and start some tablet based entertainment thing, whether Twitter or Netflix or just Wikipedia. (Usually hacker news is somewhat self limiting as far as time goes.). Since COVID I drink so much caffeine but also I am working like 7 am to 7 8 or 9 every day but weekends and just exhausted. Error prone too. I have to force myself not to do changes later in the week; not because of not wanting a Saturday incident but because I can’t trust my own judgement as much.