The manual says: "The only decision we need to make is to return to the syllable, in our mind, when we realize that we have forgotten it. But this is done with no effort at all!"
How do we return the mind to the mantra without effort? Does not any thought, however subtle, require some effort of the will, or concentration, to return to when we have forgotten it?
It also says to think the mantra in the way that it comes naturally in the mind. What if it doesn't come at all? Do I start repeating it in the beginning and then just let it come or go as the process unfolds?
When "thinking" the mantra, is this done on an auditory level? In other words, do I imagine that I am mentally "hearing" the mantra in my consciousness, or just thinking the thought of it?