Devi, Mother of the World, Prakriti, Lalita Tripurasundari, the Red Goddess.

"Dear One, Tripura is the ultimate, primordial Shakti, the light of manifestation. She, the pile of letters of the alphabet, gave birth to the three worlds. At dissolution, She is the abode of all tattvas, still remaining Herself" From Vamakeshvaratantra

Image of Satguru Sivaya Subramuniyaswami
Sadhana is performing the same discipline over and over and over again. Just as we methodically exercise the physical body to build up its muscles, we perform spiritual disciplines over and over again to strengthen our spiritual, inner bodies.
—Gurudeva