What does the word 'sadhana', which is considered essential for realization of divinity, mean ?
The literal meaning of Sadhana is the effort you make to achieve the object you desire or to reach the goal you have in view. Sadhana is thus the primary means to realize your aim or objective. A second meaning of the term is Sa-dhana, that is wealth that is associated with Divinity. Dhana is described in three ways as Aishwarya, Sampada and Dhana (material wealth). All of them refer to the same thing. (SSS Vol 21, pg 114)