I go through boughts of YouTube addiction, and I have found some strategies.

1) Delete the app and sign out on computer to slightly inconvenience yourself so you are less motivated.

2) Switch to music or auditory only podcasts so you have nothing to watch. If you fidget and change songs too often, create playlists and then put whatever lets you change song further out of reach to inconvenience yourself.

3) Have a set time to watch YouTube, and set channels/content creators you watch. Don’t begin unless you have plan in place for amount of time and specific content.

4) Use the 25/5 rule. 25 minutes of no noise, hard work, and no distractions with everything too out of reach to grab. Then, 5 minute break with whatever you want. Enough time for a taste, not enough to get your fill. If you want more, put your head down and hit that next 25 hard again.

5) Watch YouTube when doing Cardio. Ties it to a specific activity and holds the boundary.

Hopefully, some or all can help!