Today, Sir Tanya is the first half of Parak Yud of Yggarasat Shulva. In yesterday's year we learned that the higher form of Shulva, Chulva Ila, to reunite the Nashama with Hashem as it was before descending into this world is through toiling in the study of Tara in complete union with Hashem, allowing godliness to be expressed through him. Hashem's thoughts and speech become his thoughts and speech. Hashem is compassionate, so he is compassionate.
Hashem performs Siddaka, so he performs Siddaka, and so on. However, the person must also thrive upward in his attachment with Hashem. This is done through proper davening, prayer, to contemplate upon the infinite greatness of Hashem to the point where he feels a true and real love for Hashem, especially when reciting the Shema. As a result of that, Vidybar Thabam becomes a vessel to truly contain the divine words of Tara.
Moreover, through proper contemplative davening, he also becomes a vessel to the infinite light, which he draws through his fulfillment of Mitzvas, Ashakity Shandhu bemitzv, in fact, even throughout his entire day. His davening makes him a vessel to experience this complete attachment with Hashem in all that he does. As a result of Hashem, Nashi, to you Hashem, I lift my entire self.