It is the source that sustains us, not the object that entertains us. In this Sutra we are urged to take time to cultivate our Bliss from within, to fill ourselves with Bliss as a means of sustainably sourcing our Bliss so that it will last a lifetime. We do this regularly through gratitude practice and Bodhichitta, but this is also the work behind the Shambhavi Mudra, and the essence of surrender, a means of bringing our energy closer to the source so that our happiness can be sustained from within. Taking a look back at the Tattvic map of manifestation, we see that our work is always to rise towards our source, from the object, to the power of perception, to the perceiver themself, and beyond. In this way, yogis have always sustainably sourced their bliss from within, instead of using up the raw materials of this or that manifestation of happiness. When we can take a step back and see the source of our thoughts, words and actions, we begin to “see what's possible” as Sri Shambhavananda is fond of saying, to see how happiness is possible in any circumstance of our life.