A yoga is a meeting of two things. In spiritual science, the word ' Yoga ' is used only in meeting or union of the Atma ( soul )
with the grace of Almighty God. And to obtain this, the chanting of mantra is the easiest method.......Maharaj Sri Krishna Gopal ji Vyas.
Mantra is always benificial to the practitioner, provided it is ordained by someone who is competent to give a mantra. This may be illustrated by an example that a lighted candle can light another candle but an unlit one cannot. The soul can be enlightened by chanting of an alive mantra.