Dropping TV is the single most life-changing thing any modern person can do. Mostly because it gets you to wander "what do I want to do tonight?"
I used to think that. Then I did it, and it was true for about 8 years. Now the internet has all the TV I'd ever want to watch in an immediately summonable window right next to all the other info-crack which had taken the place of television. I'm thinking dropping the internet is going to be the next big life changer. I went on a laptop free vacation a couple months ago and felt like I had 6-8 hours of extra time per day. Watching a couple TV shows in the hotel room at night was actually kind of relaxing and quaint, like I'd taken a time machine back to a simpler age...
It's said that alcoholics and drug addicts have a clear path to getting clean - completely cut out the addiction from your life. But people who have problems over-eating can't make as simple a change to solve their problem. After all, you need to eat to live.
The internet is kind of like that for me - it's something I need to do work on and learn from, but is something I frequently over-use.