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Can you voluntarily not think anything? A number of my Asian relatives & friends seem to have a genetic disposition for better mental self-control. Of you already can go into “zero mode” at will, many meditation types really won’t bring you much benefits, IMHO.
One alternative would be "meditative reading": Pick a poem or an inspiring text, e.g. psalms or Biblical proverbs, and then read them daily. This is a decent compromise between concentration & keeping your mind busy. After a few weeks, the content will take on a life of its own.
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