Sometimes a devotee offers this prayer without being aware of its import. He may begin to see the Lord's response - his attachments being destroyed. He may wonder why all these things are happening to him. He may even renege on his prayer, deciding he's not ready for such mercy. He plans to restate the prayer when he's older and can enjoy his senses less. Prahlada Maharaja preached on these exact points to his classmates. He told them to become Krishna concious while they are young. By the time we are old, these attachments are going to be very difficult to remove.
Lectures from a disciple Vol 1, attachments and material desire, Pg 467 2nd paragraph