I struggle with some demons when it comes to the internet, mostly in terms of distractions and time wasting. Alcohol problems run in my family, and while I have no problems with it now or in the past, I find my addictive tendencies come out in regards to the internet and its content.
I've learned that I am very sensitive to physical spaces in my life, and I have made an effort to set "space boundaries" for myself to help with my tendencies. For example, I got rid of my desktop computer, replaced it with a laptop, and got rid of my desk in my room. It was calling me every day to sit down and use my computer for hours on end. It's been that way since childhood - the habit is deeply ingrained.
Now, I use my room for relaxation and I try to keep it that way. I'm not perfect, but when I have to work from home I make sure I don't do it in my room. I sit at the dining room table most times, and that has become a "work space" for me. I've trained myself to not work in my room, and, while I still use my computer and the internet in there, I only use it for personal things.
This solution is still in flux for me. So far it has been successful in turning my room into a relaxation space, which was a real lack in my life before. I hope that helps!