Mind is a bundle of Vasanas (desires) and Sankalpas (thoughts, imagination). Mind is a bundle of Raga-Dvesha (likes and dislikes). Annihilation of mind is Mano-Nasa.
Manolaya is temporary absorption of the mind. This cannot give Moksha. The mind can come back again and wander in sensual objects. Manonasa alone can give release or Moksha.
How is the mind purified, brought under control and how are its activities stopped, and how is it annihilated? Here are some useful and practical points. Mind can be controlled and annihilated by Vichara or enquiry of 'WHO AM I?'. This is the best and most effective method. This will annihilate the mind. This is the Vedantic method. Realise the unreality of the mind through philosophical thinking.
Eradicate the feeling of egoism. Ego is the seed of the tree of mind. - I thought is the source of all thoughts. All thoughts are centred on the little - I. Find out what the little - I is. This little - I will dwindle into airy nothing. It will be absorbed in the Infinite - I or Para Brahman, the source for the little - I or Ahamkara (egoism).
The Sun of Self-realisation is fully seen when the cloud of ego disappears.
Vairagya (dispassion) is another method for annihilating the mind. It is distaste for objects of sense-pleasures by finding out the defects in the sensual life. Objects are perishable. Sensual pleasure is momentary and illusory.
Abhyasa or practice is another method. Concentrate the mind by fixing it on Brahman. Make it steady. Abhyasa is ceaseless meditation. This leads to Samadhi.
Asanga or non-attachment is a sword to destroy the mind. Take the mind away from objects. Detach Attach. Detach it from the objects and attach it to the Lord. Do this again and again. The essence of the seed of the sprout of world-experience, which is desire, can be destroyed by the fire of non-attachment.
Vasanakshaya is another method. Vasana is desire. Renunciation of desires leads to Vasanakshaya. This will lead to annihilation of mind (manonasa). Desire for objects of pleasures is bondage; giving it up is emancipation. Desire is the most essential nature of the mind. Mind and egoism are synonymous.
Vibration of Prana causes movement of the mind. It gives life to the mind. Pranayama or control of Prana will stop the activities of the mind. But it cannot destroy the mind to its roots like Vichara.
Control the thoughts or Sankalpas. Avoid imagination or day-dreaming. The mind will be annihilated. Extinction of Sankalpas alone is Moksha, or release. The mind is destroyed when there is no imagination. The experience of the world illusion is due to your imagination. It vanishes away when imagination is completely stopped.
Mental renunciation of possessions is another method. The absolute experience can also be realised if you learn to be in a state of thought-suspending Samadhi.
Attainment of equanimity is another method. Be balanced in pain and pleasure, heat and cold, etc.
Japa, Kirtan, prayer, devotion, service of Guru and study are also means to annihilate the mind.
He alone experiences everlasting peace and Eternal Bliss who has transcended the mind and rests in his Own Satchidananda Atman.