
The moment Sita desires the golden deer, the Mind identifying with the lower nature becomes extrovert and desires the sense objects. The fall of the individual starts. Sita forgets the might of Ram and forces Lakshman (tapas) to go to Ram's help. Sita becomes an easy victim of Dasamukha Ravan (the ten sense organs) and is carried away to Lanka, the Material World, away from the Land of Dharma and Spirituality.
Sita is penitent; she regrets her action and prays with single-minded devotion to be saved. Ram (Self) destroys Vali (Lust) and organizes monkeys (thoughts) to cross the ocean and reach Lanka. The ocean to be breached is the delusory attachments and fascinations in a deluded Mind. The forces (rakshasas) that fight against Ram are the negative tendencies.
So when Sita (Mind) is turned towards Ram (Self), continuously and constantly, such a mind is no mind at all. Ram, the 'man of perfection', allows the Mind to remain in him but is not affected by it.
Finally, the inner personality is purified and rehabilitated and the Mind disappears to become One with the Self. Ram, thereafter the 'Man of Realization', rules over the Kingdom of Life. Sita, the Mind, is banished, but having lived with her for some time something must emerge. It did in the form of Luv and Kush -- perfect Masters of Wisdom in the form of Books singing the Glory of the Lord.