Srimad Bhagavatam Canto 06, Chapter 02, Text 35

SB 6.2.35

so ’ham tatha yatisyami
 yata-cittendriyanilah
yatha na bhuya atmanam
 andhe tamasi majjaye
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
I am such a sinful person, but since I have now gotten this opportunity, I must completely control my mind, life and senses and always engage in devotional service so that I may not fall again into the deep darkness and ignorance of material life.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Every one of us should have this determination. We have been elevated to an exalted position by the mercy of Krsna and the spiritual master, and if we remember that this is a great opportunity and pray to Krsna that we will not fall again, our lives will be successful.
Srimad Bhagavatam Canto 06, Chapter 02, Text 34
Srimad Bhagavatam Canto 06, Chapter 02, Text 36-37