Please do not neglect to engage yourself in the prescribed duties for maintaining your spiritual strength. Without keeping spiritual strength there is no question of any accomplishment like painting or anything else. So Krishna Consciousness is first in all circumstances. Everything should be regulated in devotional service. Just like eating. Eating is necessary to remain fit, but too much eating means disease and too little eating means starving. One must adjust things properly, that is the program of Krishna Consciousness.

(From Srila Prabhupada's letter to Jadurani – Bombay 16 November 1970)