I suffered of this problem as well and I believe I managed to solve it.
## Netflix
- I only open Netflix when I know what I'm going to watch.
- When I don't know what to watch it means I'm not in the mood for anything I'm currently planning to watch. So I don't open Netflix, I go to YouTube instead.
- When I know what I want to watch (these days I'm binging Mr. Robot) I favourite things that catch my interest while using the app. This is the only time for new content discovery within Netflix.
## Steam
It might sound ridiculous but I've found that to power through I need to approach games like work. I have to dedicate time for it - a weekend, or even take a vacation (I found that the time around the end of the year works best for me). Since it is something I plan, I discuss what to play with my friends and make a decision beforehand.
When the vacation comes, I make myself play at least 8 hours a day on the same regime as if I was working. After a few days I get into it and then I can continue the game in some normal occasional schedule as well. I've been able to enjoy the Mass Effect games in this way the last winter and Witcher 3 the year before that. I don't think I've managed to enjoy a single player storytelling game to such extent in the decade before that.
I try to avoid opening my 500+ game 80% unplayed Steam library. When I don't know what to play, I don't open Steam, I open YouTube and watch some let's play instead.