Prabhupada said the idle mind is the devil's workshop. We will be dwelling on sex and money. So the idle mind is the devil's workshop ...so one will dwell on sex and money, Prabhupada said. Therefore one must take up devotional service. One must seriously engage in devotional service. This devotional service must be very absorbing, there must be a lot to do so that we just don't have time ...or otherwise (sanskrit) ...enjoy and renounce..enjoy and renounce...enjoy and renounce....
So when we go to that state then we can become more fixed- when we are actually being fixed in the regulative principles and fixed in spiritual practices and never break them then purification of the heart can take place much more quick. So this is required. This is what Sri Chaitanya Mahaprabhu taught and all of His associates are showing us this example.
(HH KKS June 2004)