Jitatmana ha prasantasya, these two words inject the position. Jitatma means controlled one who has controlled the apamaana. Here control the apama means body senses, mind are under control. Prasantasya means deeply serene, controlled self to serene self.
Swami Sarvapriyananda teaches Chapter 6 (Verse 7) of the Bhagavad Gita. In this series of talks, Swami Sarvapriyananda unfolds the highest truths of Vedanta through the study of the Bhagavad Gita (The Song of God).