You could use a hosts file and a cron job, perhaps, for something similar.
Or do what I do, and just edit the hosts file manually. That means I often go for days without changing it, because it forces me to make a decision, rather than act on impulse.
Or do what I do, and just edit the hosts file manually. That means I often go for days without changing it, because it forces me to make a decision, rather than act on impulse.