In my mind, two of the ways to achieve enlightenment are to get rid of sensory pleasures and Sandhyavandanam; what else is required?
To get an understanding of how one can become realized the best guide is Bhagwat Gita. So you might wanna start on that a bit.
On the other hand, as per my understanding of Gita (very limited understanding), there are 3 categories to it that are: Karm-Yog, Bhakti-Yog, and Sankhya-Yog. These are not totally mutually exclusive, but more intertwined within each other.
Karm-Yog suggests that one should follow his karm (responsibilities and duties) with full devotion.
Bhakti-Yog suggests that one should have an utter devotion to God.
Sankhya-Yog reveals proper expression of the knowledge of the Supreme Self. (God is within you as Atma).