But the long term benefit of TV/Video isn't a diet that's good for you. Consider all the things you could do (not "achieve") if you'd use it for reading books, travel, learning a language or art. What this medium robs you of is boredom, which maybe feels great in the short run, but is hugely damaging to your creativity, focus and (probably even) mental health.
When I deleted facebook I noticed a huge improvement, but also I shifted my attention to other things which are equally addictive (HN, and my "personal information pipeline"). So like when I stopped smoking and moved to caffeine and sugar I substituted my FB addiction with other forms of unhealthy consumption. Getting rid of FB is therefore easy but getting rid of the underlying addiction is _really_ hard.
Sitting alone in a room with your thoughts is almost impossible (for most). Try it for a couple of days! Do nothing - not even reading a book you'll feel like you're going insane!
What works though is taking really long walks, or going out to nature for a few weeks (or months) and being on your own. You won't feel bored for long I'll promise! The most awesome memories I personally have are from things that made zero sense (and often in the most terrible circumstances).