Not really. This sort of thing is really helpful. It's not that I am not disciplined, but rather that I need a reminder to keep myself disciplined when I surf on the web.

A small reminder.. it's easy to end up in scrolling mode.

StayFocusd had the nice feature that you couldn't change its settings for the current day. The only way to get around it was disabling/uninstalling the extension.

The behavior curve is interesting. It is for me now practically an autonomous unconscious behavior to open Reddit or HN. StayFocusd would figuratively provide the "slap" to make me consciously realize what I was doing, so going through the steps of disabling it was a conscious, deliberate decision, which was enough to prevent that from happening.

In my /etc/hosts file, I redirect distracting websites to 0.0.0.0 to block them. There's nothing stopping me from enabling a website beyond the effort to type in sudo vim /etc/hosts, but yet I now spend a lot less time on those websites. Human psychology is funny that way.