||Jnana Yoga is the most difficult of the original four paths (Raja, Bhakti and Karma Yoga are the other three).
Jnana Yoga is the yoga of inner wisdom and knowledge and enlightenment, requiring tremendous strength of willpower and intellect.
Applying the philosophy of Vedanta (see Yoga Vedanta) the Jnana Yogi uses his mind to explore his own nature.
As we perceive the space inside and outside a glass as different, just as we see ourselves as different from God, the devotee is lead to experience his unity with God by braking the glass.
The aspirant needs to have integrated the lessons of the other three yogic paths before practicing Jnana Yoga, as without selflessness and love of God, strength of body and mind, the search for self-realization can become mere idle speculatin.