Bhagwad Gita
Chapter 12, Verse 10
अभ्यासेऽप्यसमर्थोऽसि मत्कर्मपरमो भव।मदर्थमपि कर्माणि कुर्वन् सिद्धिमवाप्स्यसि।।12.10।।
If you cannot practice the regulations of bhakti-yoga, then just try to work for Me, because by working for Me you will come to the perfect stage.