It is the causeless mercy of the Supreme Lord that He always tries to bring us back home, back to Godhead. God is liberated and He tries to make us liberated, but although He is constantly trying, we refuse to accept His instructions. Nonetheless, He has not become angry.
It is actually the Lord’s mercy that He takes the trouble to rectify our misbehaviour, although faithless persons criticize the Lord’s fatherly vigilance.
The words of the great devotees of the Lord are impregnated with the mercy of the Lord and if we hear with a submissive heart, the mercy of the Lord is impregnated within us.
Unless we hear very strictly with great faith to the order of our Spiritual Master, we will not understand what is the mercy of Krishna and how it is coming upon us.
If we actually want spiritual advancement, we have to be willing to perform tapasya to attract the attention of God to show Him we are serious, to show Him that we are depending on His causeless mercy.
Sufferings, troubles are the mercy of the lord. If everything is going normally, then heartful prayers will not come. You cannot pray mechanically.