You do not really need to stop what you are doing in order to rewatch that YouTube video that just popped up in your mind.

Next time, when you notice you feel that you want to interrupt yourself and do something else, look at the time. Wait 3 minutes to give in to it and resume whatever you are concentrating on.

Not everything you desire is what you actually want, let alone need. Sometimes what pops up in our minds is important, but more often than not it is just a fleeting distraction. One we act upon too often after years of tech conditioning us every waking moment to follow instant gratification.