Burning material desires may manifest in various ways. One way is that we think of sense objects. Another way may be that we do not think of sense objects – as devotees, we can come to a stage where we do not allow our mind to think of sense objects, so we do not think of sense objects – but then, the blazing fire of material desire manifests in dissatisfaction. And for a long time, we are dissatisfied. When a devotee is not happy it is dangerous because we need happiness. A devotee MUST be happy! This is very important.
We should not just ignore that, su-sukhaḿ kartum avyayam (Bhagavad-gita 9.2). Spiritual life must be joyfully performed; you must have some fun. It is important that everyone, not only the mahabhagavats – the topmost vaishnavas are having all the fun – and for everyone else, it is just duty, duty, heavy duty spiritual life; that cannot not last, for how long can one do so!? Then one will surely embrace the material energy so we must also cultivate some fun.