The individual soul is forever a servant of the Supersoul and therefore, his reletionship with the Supersoul is to offer service. That is called Bhakti-Yoga or Bhakti-bhaava.
If we take shelter of the lotus feet of the spiritual master, we can become free from illusion, fear and distress. If we wholeheartedly beg for his mercy without any deceit then the spiritual master bestows all auspiciousness upon us.
Material world brings pleasure and miseries.
Fearfulness is the result of material involvement.
Srimad-bhagavatam 4.24.52,
Srila Prabhupada
Even if you have done no wrong, no mistake in the last 50 years, remember the mistake you did 51 years ago and repent for it and become humble.
In order to follow the path of great souls, there must be determination.
Preaching means to see whatever little spark of bhakti in someone and fan it into a blazing fire, which will burn all the anarthas (contaminations) and make him a great devotee.
Material world is like a dream.