Liberation, or moksha, is the Gita's word for ultimate freedom: freedom from ignorance, compulsion and the sorrow they bring. It is not described only as a distant event. Many verses speak of a freedom that can be tasted in this life, as a mind grows quiet, desire loosens and joy is found within. For readers today, it is a way of asking what real freedom is.
The Gita links liberation with inner joy. Gita 5.24 says the seeker who discovers joy, fulfillment and illumination within attains Brahman and supreme liberation, and Gita 6.22 describes the realization of the Self as the supreme attainment, undisturbed even by great suffering. Gita 5.26 says that freedom from desire and anger together with self-mastery leads to lasting peace, and Gita 5.28 describes a person who controls the senses, mind and intellect and transcends desire, fear and anger.
It also describes the path. Gita 6.28 says constant yoga leads to the boundless joy of communion with Brahman, and Gita 6.45 says persistent effort gradually purifies the yogi. Gita 5.25 says liberation comes to those who have removed impurities, overcome doubt, mastered themselves and work for the welfare of all beings. Gita 5.17 says those who dedicate their intellect, mind and purpose to the Highest Truth are freed. Gita 2.72 says it is never too late to begin.