How does Krishna answer the question of whether selfless action or renunciation is the best path to reaching nirvana?

Krishna says that renunciation without coming to understand selfless action, or action with awareness as to its true purpose, is spiritually destructive. Krishna goes on to talk about meditation as a key element in the path to selfless action. It is a crucial step in freeing oneself from attachment to the results of work, and from desires for the enjoyment of sense objects. Through meditation, one can conquer himself, and live in peace no matter the external surroundings, and find impartiality in even the most extreme circumstances.