Maybe the watchlimits extension can help you combat YouTube. As the site says, "Watchlimits goal is not to stop you from having fun, it's to stop you when it's no longer worth it.". Source: over 1 year ago

You can use watchlimits.com extension and only allow channels that are necessary for your music learning. It requires a paid version, but it's probably worth 6 usd per month for you. Source: over 1 year ago

Watchlimits.com extension to eliminate my occasional video binging habit (would make me stay up late or waste precious hours when I could be doing other things). Source: over 1 year ago

Or you can also just install watchlimits.com (chrome extension), you can set all sorts of limits and also you can allow certain educational channels as well. Source: over 1 year ago

If you want to limit youtube you can use extensions like watchlimits.com but seriously it seems like you have a much deeper issues. Source: over 1 year ago

I found another Https://habitlist.com/ I can see it's kind of similar. Source: almost 3 years ago

I've had good results for the past ~6 months using Habit List [0]. What's worked for me is to slowly add 1-2 new items, being thoughtful about prioritizing them. Then when I'm consistent with those, adding more. [0] https://habitlist.com/ (ios only, just a happy user). - Source: Hacker News / almost 3 years ago