Unsubscribe from all YouTube channels that you are currently subscribed to and then type a name and a letter into the search bar. The first result that contains the name and the letter you typed into the search bar will be your new favorite YouTuber for the next six months. Watch all of their videos as many times as you can until your six months are up. You will then type a name and a letter into the search bar to reignite the cycle. Repeat this process until you are no longer having fun.