Premanand Maharaj Ji
भजन में मन कभी लगता है कभी नहीं, आलस्य कैसे रोकें?
निरंतर नाम जप से गुणों का असर रुकता है
The three gunas affect the mind, and tamas brings sleep and the 'who will do bhajan?' laziness. If naam goes on continuously, it stops their effect.
If our naam keeps going continuously, it will stop the effect of these three gunas, but over a long time, not just a mala or two, but long and continuous.