I toyed with this feeling. Not to repeat the dopamine theory we see everywhere.. but it feels that most of the web really ends up in the low hanging easy pleasure of our brain, and any moment of struggle will tickle that reflex. And when you ignore/fight it for a second... You (at least I) can sense blood pressure change in my brain and then the thinking side of my head goes back into rhythm again. Thinking is a pleasure too, but it's requires a bit of patience.
Can relate to that ”moment of struggle”. Thinking about stopping the use of any dev tools that don’t have instant feedback, as having to wait a few seconds for something (currently deploying to google app engine mostly) makes me instantly alt-tab to reddit.
It will block the time waster websites you configure and will block them for you until you've ticked off the list. It's simple but effective for catching that mindless ctrl+t -> reddit reflex.
Trivial inconveniences are huge. For years, I could not get myself to floss. I had no problem with the brushing habit. So then I tried using those floss-picks instead of the reel. Bam, flossing rate went from about once a month to every other day.