The key is not to let yourself become distracted with anything

I find it very interesting that so many of these methods sound like varying paths to monoidealism - i.e., the hidden meaning of "just do it", i.e.:

The trick is in the meaning of the word "just". When somebody says "just do it", they are trying to communicate that you should not do anything else. It might better be phrased as, "Only do it, without thinking about anything, not even about what you're doing. In fact, don't even do it, just watch yourself doing it, but don't actually try to do anything."

(Ironically, I myself got this in 2006 but didn't connect it to the bigger picture until recent discussions here.)

In essence, we can assume that the key to seizing control is to clear any "current state" out of the machinery, either by restricting external stimuli or simply refusing to follow up on distracting thoughts that arise, until the desired internal state is achieved.