Meditation and Liberation

All efforts for spiritual evolution, dharmic deeds, karmic deeds, wrong deeds are done by ego self 'i'. The little 'i' wants moksha or mukti also just as it wants other objects. Where as the effort for mukti done by ego is to dissolve ego itself.
Now in the process of ego wanting mukti (liberation), there are those who really suffered in life and understood that life itself is suffering. As budhdha told in four noble truths, one has to understand suffering. For them liberation will happen naturally when they meet Sadguru, as they are ready. For some, Even though they suffered enough, hope is still there for the worldly pleasures. World hasnt stopped being beautiful for them. Understanding of world is not correct still. The vairagya is not perfect. For them there is the little 'i' coming near Self , getting the impression of Self in chittha, and then other vasanas of world pull them back. This process has to happen many times so that the impression/vasana of Self becomes stronger in chittha till mukti happens. During meditation , one (mind, ego) may become silent and become closer to Self. Similar thing happens in the presence of Sadguru. Physical proximity to Sadguru is like exposure to radiation. One's mind tunes to silence in the presence of Sadguru. Even thinking of Guru, one gets to a state of silence equivalent to doing meditation. One needs to do meditation when Guru's presence is not available. Then, there are lucky few who have the luxury of doing meditation in the presence of Guru under guidance.
But who is getting liberated.
'i' is ego, it is false. 'I'/Self is always liberated. Then what is this effort of 'i' to be liberated ?
It is the effort of 'i' to become closer and closer to divinity, and each trip near Self leaves a impression in the chittha of the sadhaka. So, the effort has to be two fold.
1) To remove negative tendencies
2) To develop positive impression
Both of the above are actually done by the same effort.
During meditation, the impression of peace of Self takes care of both the above goals.
Is meditation the only key to such peace ?
According to learned source,
Sadguru, Sadhana, Shastra, Seva, Svaadhyaya, Sharanagati are the keys .
Sadguru doesnt need explanation
Sadhana : Practice. whatever spiritual practice one does under Sadguru guidance
Shastra : One needs to understand scriptures and take them as guidance. Sadguru's words are scriptures themselves and have higher precedence.
Seva : One needs to do service to the universe in the spirit of Yajna. not just to fellow human beings, but to all living and non-living entities in the universe.
Svaadhyaya : Observation of the self
Sharanagati : acceptance of Universal laws, destiny

Hari Om