The number one thing I've found to be effective in combatting this is sleep. I have to get 8 hours of uninterrupted, unmedicated sleep. 9 hours is even better. And I have to do it for a few nights in a row.
If I do anything at all that interferes with the quality of my sleep, I'm screwed, and The Stream will suck me in. Conversely, things that increase the quality of my sleep -- exercise, diet, not using gadgets after a certain hour -- all increase my ability to fight off Stream-induced distraction.
I'll second this, but note that I wasn't getting the ~8 hours of truly restful sleep until I rejuvenated my exercise routine. Not to hijack this comment and turn it into a thread from /r/Fitness, but I simply couldn't turn off "the Stream" (a helpful metaphor, thank you) without actually going to bed tired.
My knees are shot now, so running isn't an option. But if you're able I highly recommend swimming.
If I do anything at all that interferes with the quality of my sleep, I'm screwed, and The Stream will suck me in. Conversely, things that increase the quality of my sleep -- exercise, diet, not using gadgets after a certain hour -- all increase my ability to fight off Stream-induced distraction.
So that's my recommendation. YMMV.