This is not a new experience. The famous "Pilgrim" wandered about Russia praying "Jesus, mercy" constantly, feeling the intense desire for the prayer arise at various times. Krishna Das said "my job is to pay attention to the sound of the Name, and to come back when I get distracted." Fr. Chrysogonus of Gethsemani said "You do not take the word of God into your mouth. Instead you enter into the Word, because the Word is bigger than you are." (He may have been paraphrasing Abraham Joshua Heschel, here, though memory is an unreliable servant.) Ram Dass talks about that moment when "jappa" or mantra becomes "ajappa jappa"--the moment when "the mantra prays itself and I listen." The dynamics of mantra practice are uniform across religious traditions. This text concludes that the apostles had similar experience with the name of Jesus, and that the experience became a cornerstone of Christian humility.
Here's how to do it. Becoming as still as possible is advisable: by lying down, if you can manage to stay awake, by sitting in a chair: do whatever strikes a balance between minimizing discomfort and maximizing alertness. Your ego will want to try to twist your body into a pretzel--it'll want to attempt full lotus or vajrassana because one "looks more spiritual" that way. Do this if you must, but if you don't build up to those with years of practice, pulled muscles will convince you that stillness, not "the appearance of holiness" is the goal.
Take the word into your mouth. Longer mantras will feed the intellect, such as "always carrying in the body the death of Christ, so that the life of Christ may be made known in our mortal bodies also." Shorter mantras will focus you on sound itself such as "Jesus, mercy." You'll notice the mantra is "one of many things you think about." For a while, that's just fine. There will come a time when the impulsion arises, to let go of things that aren't the mantra, and if you aren't operating heavy machinery when it does (if you can spare the attention safely,) follow that impulse.
Apply a bit of force with the lower abdomen, pushing the muscles inward and down. This will decrease thoughts about things that aren't the mantra. You may also begin to realize that you "feel sound more." Where you feel the sound will shift, depending on where your body is carrying tension--the vibrations of sound will gradually break up stored tension. Gently focus attention ("mind energy") and intention ("guts energy") on physical sensation, regardless of whether the sensation is pleasant or painful. Bliss will arise, let it go. Pain will arise, stay with it till your desire to judge the sensation subsides. As signs of intent and objects of attention, physical sensations themselves will come to stand in for words as the substance of prayer. That shift is safe, natural, completely ok.
At some point, All physical sensations become the mantra. All sounds become the mantra. Your ego will say "this is so groovy" and "prayer is really happening." And if you can, minimize clinging and analysis by remaining with physical sensation. Then, let go. Demands of life will take over, marking a natural end of "practice time."
And listen: this is a practice that leads to transformation. Not a magical solution for ongoing problems. Suffering will remain--the one enduring it will change. The struggle for daily sustenance will remain--the one punching the time clock will change. You will notice you need less control, fewer assurances of security to sustain practice. This is a "God skill" to work and rejoice in life's nifty bits while stressors remain. Glimmers of real growth will arise and subside--and those, while temporary, are significant indeed.
St. Paul was a cranky bloke, but his experience of prayer was certain. Like the silliest goose in the gaggle, he boasted of his sufferings: he was shipwrecked, flogged, and occasionally homeless. But he eventually looked at the "god unknown" and knew who it was. He eventually said "in God we live, and move, and have our being." He eventually could say "I have become all things to all people" even if it meant appearing a criminal, unjustly, to some. Life is "everything, all at once" and some of it is hard. Amidst impermanent joys and disappointed expectations, genuine contentment is a rare feeling, and an even rarer deliberate choice. If our track record were half as good as mantra made the apostles, we would be fortunate indeed.










