Something I've found very helpful at breaking the habit of going to HN/Reddit/whatever when I start waiting for something to finish running - set up a cronjob t

Something I've found very helpful at breaking the habit of going to HN/Reddit/whatever when I start waiting for something to finish running - set up a cronjob that checks what time it is, and if it's within working hours, it adds a bunch of sites to my hosts file, pointed to a server I control. It also grabs my current todo text file, and formats/pastes that into the index page of that server. The page also does some light shaming. Outside of work hours, it removes those host file items automatically. It helps in those cases where you reflexively visit a time waster without really meaning to.