“Believe in God; Believe in Him with perfect trust. Consider Him as sweeter than the sweetest of earthly joys. Ponder that He is the incomparable One. Reflect on His glory night and day and at all times. Let the constant remembrance of Him fill the interstices of your being. Meditate that, “I am naught--He alone Is.” Let the worship of God be the goal of your life. Whatsoever you think, that you become. Cherish the Lord in the recess of your heart. Everything, everywhere is subject to His Will. Ultimately it will be seen that he is All in All.” Yogaswami
“SivaPeruman is the non-dual Reality. I glory in contemplating that He and I are inseparably linked in Oneness. Whatever one yearns for, that he becomes. Therefore meditate that Thou and He are in unison. Then shall all thy acts pulsate as His acts. The Supreme Reality Is He. He is immanent everywhere. The One has assumed many forms. He is beyond birth and death, transcending time and timelessness; He is eternal, and ever unchanging. The perfection of Truth illumines All. ” Yogaswami
Unless kundalini is active, the deepest meditative states are not available to us. But to activate kundalini, Gurudeva tells us we must invoke the grace of Lord Ganesha and Lord Murugan. "Yoga is internalized worship which leads to union with God." Experience the inside of you in a profound way. This requires dispassion. The popular term "kriya yoga" usual refers to a form of pranayama, but the original kriya yoga is defined by Sage Patanajli as the practice of three of the niyamas: tapas, svadhyaya and Isvarapranidhana. To achieve samadhi we practice yoga, steady restraint of mental activities, austerity, meditation, detachment, self study and worship of God. Communion with the Ishta Devata, the chosen God is a key and also Gurudeva tells us: the Deity chooses you.
Master Course, Dancing with Siva, Lesson 39
Master Course, Merging with Siva, Lesson 5
Patanjali's Yoga Sutras