Majest...
If you decide to try the no TV challenge again, here are a couple of thoughts that might help.
I completed a no media challenge from Jan 13th - Feb 12th. No TV, no internet, no PC games, no news, no personal email or texting, nada. I allowed music, and reading. I work behind a PC as well, so I had to clearly outline what I could do at work, which was internet searches for work related issues only, which rarely come up in my job. All email work related, ect.
I had to analyze my usage of each item, and outline goals and 'rules' around each. For example, my husband and I eat in front of the TV as well every night. SO, I asked him if he would join me at the dining table several nights a week. On the nights he didn't, I popped open a book and read while I ate. If he was watching TV while I was working in the kitchen or around the house...yes, I could see the TV, but usually I would pop on some headphones so I never even noticed.
One thing I also had to do, was REPLACE all this free time I was creating without the PC and TV. I outlined a ton of productive goals around the house.....cleaning out my office closet, ghosting and cleaning up an old PC, working on a bulliten board with my goals and plans for the future, ect. If you don't have an outline of how to replace all that freetime, you will struggle. At first I was going to limit my reading, but found that I had SO much freetime without electronics, that I ended up loading up at the library on both self help books, and fiction. My goal was not complete deprivation from 'freetime', so I used fiction books to fill in the gap, and some non fiction books to fill some of my productive time.
Result...LOVED the challenge. It was very refreshing and head clearing. I would highly recommend you try again at some point when you feel ready. I am finding the more planning I do, the more people I tell, and the more I get the people close to me on board with keeping my in line (husband in my case, maybe your parents in yours)...the better. Another alternative if you struggle with the parents and thier TV time, is maybe limit yourself to 30 minutes of TV a day. So then you can sit, eat dinner, but make sure you move on as soon as your time has expired...even setting a timer if need be. I personally found it easier to 100% abstain, since one show usually tends to lead to another, and so forth.
Lastly, the ONE thing I did in my last 30 day challenge, was to set an ultimate goal for the end of the 30 days, so I could relate all my efforts to that goal. For me, I needed to get my head clear so I could plan some future goals, and secondly, I needed to improve my productivity at home and at work. So if I had any 'question' about any of my rules set for the 30 days, I could always relate back to the main goal of the 30 days. I was removing media to clear my head......and that reminded me why I was doing something that was seriously challenging for me and my habits.
Best of luck on your current goals and any you may have in the future!!