Shabar mantra sadhana or every other sadhana must be accomplished, the 1st ailment would be that the seeker must have unshakable faith and devotion on the mantra and sadhana, For those who have even the slightest question regarding your sadhana and mantra, then you can always You cannot be prosperous, https://www.youtube.com/watch?v=qGCHTa9HGyw