... the Upanishads speak of jyotir brahma, the Light that is Brahman. Very often the sadhak feels a flow of Light upon him or around him or a flow of Light invading his centres or even his whole being and body, penetrating and illumining every cell and in that Light there grows the spiritual consciousness and one becomes open to all or many of its workings and realisations. Appositely I have a review of a book of Ramdas (of the Vision) before me in which is described such an experience got by the repetition of the Rama mantra, but, if I understand rightly, after a long and rigorous self-discipline. "The mantra having stopped automatically, he beheld a small circular light before his mental vision. This yielded him thrills of delight. This experience having continued for some days, he felt a dazzling light like lightning, flashing before his eyes, which ultimately permeated and absorbed him. Now an inexpressible transport of bliss filled every pore of his physical frame." It does not always come like that—very often it comes by stages or at long intervals, at first, working on the consciousness till it is ready. <ref>https://incarnateword.in/cwsa/29/bhakti-yoga-and-vaishnavism#p48</ref>
=Aspiration=
In this Yoga there is no fixed mantra, no stress is laid on mantras, although sadhaks can use one if they find it helpful or so long as they find it helpful. The stress is rather on an aspiration in the consciousness and a concentration of the mind, heart, will, all the being. If a mantra is found helpful for that, one uses it. OM if rightly used (not mechanically) might very well help the opening upwards and outwards (cosmic consciousness) as well as the descent. <ref>http://incarnateword.in/cwsa/29/mantra-and-japa#p14</ref>
<center>~</center>
I understand why certain tantrics advise saying the japa in the heart center. When one applies a certain enthusiasm, when each word is said with a warmth of aspiration, then everything changes. I could feel this difference in myself, in my own japa. <ref>http://incarnateword.in/agenda/01/october-6-1959#p12</ref>
===“Your” Mantra: Aspiration and Help===
You choose your mantra; or rather, one day it comes to you spontaneously in a moment of difficulty. At a time when things are very difficult, when you have a sort of anguish, anxiety, when you don't know what is going to happen, suddenly this springs up in you, the word springs up in you. For each one it may be different. But if you mark this and each time you face a difficulty you repeat it, it becomes irresistible. For instance, if you feel you are about to fall ill, if you feel you are doing badly what you are doing, if you feel something evil is going to attack you, then.... But it must be a spontaneity in the being, it must spring up from you without your needing to think about it: you choose your mantra because it is a spontaneous expression of your aspiration; it may be one word, two or three words, a sentence, that depends on each one, but it must be a sound which awakens in you a certain condition. Then, when you have that, I assure you that you can pass through everything without difficulty. Even in the face of a real, veritable danger, an attack, for instance, by someone who wants to kill you, if, without getting excited, without being perturbed, you quietly repeat your mantra, one can do nothing to you. Naturally, you must truly be master of yourself; one part of the being must not be trembling there like a leaf; no, you must do it entirely, sincerely, then it is all-powerful. The best is when the word comes to you spontaneously: you call in a moment of great difficulty (mental, vital, physical, emotional, whatever it may be) and suddenly that springs up in you, two or three words, like magical words. You must remember these and form the habit of repeating them in moments when difficulties come. If you form the habit, one day it will come to you spontaneously: when the difficulty comes, at the same time the mantra will come. Then you will see that the results are wonderful. But it must not be an artificial thing or something you arbitrarily decide: "I shall use those words"; nor should somebody else tell you, "Oh! You know, this is very good"—it is perhaps very good for him but not for everyone. <ref>http://incarnateword.in/cwm/04/5-may-1951#p12</ref>
==Persistence==
Your japa is given to you, isn't it? You receive it (unless you find it on your own, but that's harder and already requires another level of realization); you receive your japa along with the power to do it—but you have to learn how to do it, right? For a long while you don't fully succeed; all sorts of things happen—you forget it right in the middle or fall asleep or grow tired, get a headache, all sorts of things; or even outer circumstances interfere and disturb you. Well, here it's the same: you tell yourself, "I'll do it," and you will do it, even if.... You have to go at it just like a mule: everything blocks the way but you keep going. You said you'd do it and you will do it. There are no results—I don't care. Everything is against me—I don't care. I said I'd do it and I will... I said I'd do it and I will. And you keep on going like that. <ref>http://incarnateword.in/agenda/03/september-5-1962#p82</ref>
===Importance of Persistence ===
Any method sincerely and persistently followed can end by bringing the opening. You yourself chose the method of prayer and japa because you believed in that, and I acquiesced because it does prepare something in the consciousness and, if done with persistent faith and bhakti, it can open all the doors. Another method is concentration and aspiration in the heart which opens the inner emotional being. Another is the concentration in the head of which I spoke which opens the inner mind or opens the passage through the Brahmarandhra to the higher consciousness. These things are no fantastic invention of mine which one can dismiss as a new-fangled and untested absurdity; they are recognised methods which have succeeded in thousands of cases and here also there are plenty who have found their effect. But whatever method is used will not bring its effect at once; it must be done persistently, simply, directly till it succeeds. If it is done with a mind of doubt or watching it as an experiment to see if it succeeds or if it is continually crossed by a spirit of hasty despondency saying constantly, "You see it is all useless," then it ought to be obvious that the opening will be very difficult, because there is that clogging it every time there is a pressure or a push to open. That is why I wanted you to get rid of these two things and have harped on that so much, because I know by my own experience and that of others how strongly they can stand in the way of what you seek. <ref>http://incarnateword.in/cwsa/31/time-and-change-of-the-nature#p11</ref>
=Conscious & Spontaneous Repetition=