Realisation can be achieved by God's Grace, the Guru's grace and the seeker's aspiration.

God's Grace is the rain.

The Guru's grace is the seed.

The seeker's aspiration is the act of cultivation.

Lo, the bumper crop is realisation!

From:Sri Chinmoy,The Master and the disciple, Agni Press, 1985
Sourced from https://srichinmoylibrary.com/md