Until the Lord actually kills these internal demons, we will be harrassed. Therefore we should offer our respectful obeisances to Lord Nrsimhadeva and beg Him for His mercy. Any devotee aspiring to be free of material desires should offer his respectful prayers to Lord Nrsimhadeva just as Prahalada did in this verse. Do not be afraid of the pain that these demons' removal will cause. We want to rip these demons out of the heart. They are so deep rooted that it will not be easy. We are attached to them. When we use the word "rip", we imply that their removal will not be easy - not because the Lord lacks strength to do it, but because we are so attached that we will try to hold onto our desires. We may even be afraid to offer the prayer. What if the Lord hears us and we lose what we think is dear?
Lectures from a disciple Vol 1, attachments and material desire, Pg 466-67 last paragraph