“It might also be called a technique of God-realization, since after all God is nothing but truth, but love, but purity.” 

“The goal of this technique is to purify the mind, to free it from misery by gradually eradicating the negativities within.”  It is an operation deep into one’s own unconscious, performed in order to uncover and remove the complexes hidden there.

You concentrate the mind with consciousness – to purify the mind.

“And you cannot crave for more breath, or feel aversion towards your breathing: you simply observe, without reacting to it.  In such a moment, the mind is free from the three basic defilements, that is, it is pure.”[9]

“This moment of purity at the conscious level has a strong impact on the old impurities accumulated in the unconscious.  The contact of these positive and negative forces produces an explosion.  Some of the impurities hidden in the unconscious rise to the conscious level, and manifest as various mental or physical discomforts.”[10]

When one faces such a situation, there is the danger of becoming agitated, and multiplying the difficulties.”[11]  … However, it would be wise to understand that what seems to be a problem is actually a sign of success in the meditation, an indication that in fact the technique has started to work.”   … although the process is unpleasant, this is the only way to get rid of (defilements (pus used)) to remove the impurities.”[12]

“If one continues working in the proper way, all these difficulties will gradually diminish.  Tomorrow will be a little easier, next day more so.  Little by little, all the problems will pass away, if you work.”[13]   “Nobody else can do the job for you; you have to work yourself.  You have to explore reality within yourself.  You have to liberate yourself.”[14]

“You have to do the work; no-one else can do it for you.  With all love and compassion an enlightened person shows the way to work, but he cannot carry anyone on his shoulders to the final goal.  You must take steps yourself, fight your own battle, work out your own salvation.  Of course, once you start working, you receive the support of all the Dhamma forces, but still you have to work yourself.  You have to walk the entire path yourself.”[15]

"The key is to not resist or rebel against emotions or to try to get around them by devising all sorts of tricks; but to accept them directly, as they are."

                                                                                   --Takahisa Kora

"Instead of resisting any emotion, the best way to dispel it is to enter it fully, embrace it and see through your resistance."

                                                                                    -- Deepak Chopra

Heat, cold, itching, pulsing, vibrating, pressure, tension, pain, etc.  You cannot choose what sensation to feel, because you cannot create sensations.  Just observe; just remain aware.  The name of the sensation is not important; what is important is to be aware of the reality of the sensation without reacting to it.”  The Discourse Summaries – page 9.