You have a whole menagerie within, with the lion, the tiger, the serpent, the elephant, the ape, and the peacock. Bring them to subjection. The beauty of the flesh is really due to the life giving principle Prana. The beauty is attributable to the light that emanates from Atman. The nasty body with oozing discharges from nine gutters is composed of five elements, is a Jada Vasthu and Apavitra. Always entertain this idea. Have a clear-cut, well-defined image-picture like this. You will conquer lust by such a mental drill. If you understand the doctrine of unity in variety, if you know there is only one matter, one Energy, one Mind-substance, one Life, one Existence, Sat, one Reality, and if you entertain always such a thought, you can control Krodha (anger). If you remember that you are only an instrument in the hands of God, that God is everything; God does everything; God is just; then you can get rid of Ahamkara. You can annihilate Dvesha by Pratipaksha Bhavana. Look to the brighter side of persons. Ignore the dark aspect.
Emotion is a motive power like the steam of an engine. It helps you in your evolution. Had it not been for the presence of emotion, you would have passed into a state of passivity or inertia. It gives a push for action or motion. It is a blessing. But you must not become a prey to emotion. You must not allow the emotions to rule you. You must not allow them to bubble out. You must purify and calm the surging emotions. You must allow it to rise slowly and subside quietly from the mind-ocean. You must keep the emotion under perfect control. Do not mistake physical sensations for higher sublime emotions. Do not be carried away by emotions. There are certain people who like to hear some new sensational events just to arouse their emotions. They live on emotions otherwise, they feel quite dull. This is a great weakness. This must be eradicated if they like to have a calm, quiet life.
All evil qualities proceed from anger. If you control anger, all evil qualities will vanish by themselves. Ahamkara, Sankalpa, Vasana, Prana have intimate connection with the mind. There cannot be any mind without these four. Prana is the life of the mind. Ahamkara is the root of the mind. Sankalpas are the branches of the tree, mind. Vasana is the seed of mind. This deep rooted tree of Samsara of dire Ajnana which ramifies in various directions with branches full of flowers, tendrils, etc., has the mind as its root. If this root-mind is destroyed, tree of Samsara, this tree of birth and death will also be destroyed. Cut this root-mind with the axe of Brahma Jnana. Chop off the branches—the Sankalpas, with the knife of Vichara-Viveka.
The ever-restless mind becomes quiescent when all desires vanish. Desire raises Sankalpas (thoughts). Man performs actions for acquiring the desired objects. Thus he is caught up in the wheel of Samsara. The wheel stops when the Vasanas perish.
Just as there are doors in a bungalow between the outer and inner rooms, so also there are doors between the lower and higher mind. When the mind is purified by the practice of Karma Yoga, Tapas, right conduct or the practice of Yama, Niyama, Japa, meditation, etc., the doors between the lower and the higher mind are opened. Discrimination between the real and the unreal dawns. The eye of intuition is opened. The practitioner gets inspiration, revelation and higher Divine knowledge. –Swami Sivananda