[tekkk]

I myself have tried these types of apps before which sometimes might help, but often I face the same problem as you, when my behaviour devolves to disabling the add-on and doing whatever I want.

Now what I have practised is being mindful of my actions, and treat the time when I work, study as time without youtube videos, without writing long HN posts and so on.

It's a lot harder than having some app to ping you to stop browsing. But I think it's what works better in the long run. You choose the time when you work, say a couple of hours, then take a break. No mindless browsing in between. Or well actually what has worked best for me is to have no mindless browsing at all during the best part of the day, since the feedback loop is too strong when you get accustomed to looking "just one more video".

But I'm curious to try this out. We'll see. But I'm sceptical.