Bhagavad-gītā As It Is · Text 12.10
Krishna describes devotional practice and progression
अभ्यासेऽप्यसमर्थोऽसि मत्कर्मपरमो भव ।
मदर्थमपि कर्माणि कुर्वन्सिद्धिमवाप्स्यसि ॥ १० ॥
abhyāse ’py asamartho ’si
mat-karma-paramo bhava
mad-artham api karmāṇi
kurvan siddhim avāpsyasi
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.
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