If you want to get rid of the pains and afflictions of this samsara (worldly life), you must practice meditation. Meditation is the pathway to divinity. It is the royal road to the kingdom of Brahman. It is a mysterious ladder which reaches from error to truth, from darkness to light, from pain to bliss, from restlessness to abiding peace, from ignorance to wisdom, from mortality to immortality. Meditation leads to knowledge of the self, to eternal peace, to supreme bliss. Meditation prepares you for direct intuitive knowledge.
The Gita is not only for knowing, but it is for being and doing also.