Interesting explanation; do you have some resources for the focused- and unfocused-state techniques?
There are really three stages to making it useful. The first is to “take the lock off” by getting control over the internal chatter, and turning it off for longer and longer times.
The second is to have enough mental energy to change from your normal state of mind to either a focused or unfocused state, which means that it helps to be rested, relaxed, and without a lot of stress.
And the third is to hold your mind in place once it has reached a focused or unfocused state. This is mostly practice, training yourself to do so.
One of the better techniques to get started in this is based on the idea that the part of the brain that controls the chatter also controls attention in general. And it has limited energy to do both. So if you can use up all its energy on attention, it cannot continue with the chatter and gets quiet. And the longer you can stretch out the times of quiet, the more control you get over it.
The technique itself involves ordinary walking, which takes a lot of attention directed at the legs. Next you hold your hands in some unusual manner, with the fingers folded differently. It doesn’t matter how, just as long as your attention is also directed to your arms and hands.
Then the tricky part is to unfocus your eyes. Normally, when we look at things, we look from tiny point to tiny point, which doesn’t require much attention. But when you unfocus your eyes, you take in a 180 degree field of view in which everything is equal to your attention, which uses up a lot more attention.
So there it is, walking, holding your hands funny, and unfocusing your eyes. Most people start seeing results after a couple of weeks, going for walks three or four times a week.
A few side notes: do not wear a Walkman or other music device and don’t carry anything in your hands. This is a form of exercise, though it is not physically or emotionally demanding, so you do get mentally tired after doing it, in a different sort of way.
Turning off the chatter can be a little distracting at first, because you are so used to the chatter, and you will start to get a lot more information about your surroundings that you previously ignored.