Did you do something similar? How did having a not-to-do list work for you in the long term?
Marriage is on that list too. Also working swimmingly and comes highly recommended.
Your mileage may vary.
It's just something I noticed. Marriage and children did something to people. Especially to men. Whatever it was, it wasn't good. They all seemed to prematurely age and become miserable. I tell myself the good is private, you can't see the good of family life because you are not privy to it. I don't know if I'm wrong. I also tell myself that this is a construct of our society, not of man. That we should want to have children, that this shouldn't be a fundamental part of our lives. Yeah it isn't it, it's a misery. That a child can so completely trap us financially and otherwise is a great sadness. Money being more valuable than life. The high priests of finance determining how much life there can be.
It's not like not reading Reddit or Hacker News, will make a person suddenly more efficient. What abstaining can do is that it provide some more structure just like how Pomodoro provides structure.
Like there is a schedule and so mind can focus better a little bit since instead of checking-out Hacker News; the discipline will be there that I can check-out You-Tube or Hacker News after my work hours are done. So there is less constant interruption as well.
At least in my office, we don't allow browsing of video sites during work hours, and it provides some helpful structure which I imagine is similar to just not browsing HN for a period of time.
Sometimes I decide that I don't want to do certain things anymore, maybe because I lost interest or something more worthwhile pops up, so I don't delete the entry from my long-term to-do list. Instead I strike it out and write a very short comment behind it. Doing it that way seems to keep my head clear and helps me later to stay focused.
tl;dr: I don't have a not-to-do list but I don't delete thing I decide not to do from my to-do list, instead I cross it out. Keeps my head clear, and helps me to document the reasoning. I would recommend it to others.