"Self-realization is meant to ensure fulfilment for one’s own self. It is not reaching somewhere or getting at something external, like going to the peak of a mountain. The attainment is in dissolving the mind and intelligence, and getting into the very core of oneself. In other words, it is like multiplying everything with zero."
The Guiding force of Narayanashrama Tapovanam & Center for Inner Resources Development
a sādhaka (Sanskrit: साधक) is someone who follows a particular sādhanā, or a way of life designed to realize the goal of one's ultimate ideal, whether it is merging with brahman or realization of one's personal deity.