Once the free-will milestone is crossed, the most important question which comes is: why act? Why perform any action at all?
Is our dynamism based on the foundation of us being individual agents with free will, affected by the consequences of past actions? To some extent, this is true. That dynamism is of one kind, and makes the vyavahaarik world go round.
After I realise who I am (not) and who Prakriti is, the usual motivation ebbs away, because desire ebbs. A question then arises about the need to act at all.
This question can easily transform into nihilism. There is no logical reason to reject nihilism. I only know that I have been on the edge of that precipice, and I have not fallen over, because my master has taken care of me. If one is honest with oneself, the question arises: what is stopping me from putting a bullet through my head right now? My personal answer, guided by nudges from my master no doubt, is that Prakriti is so beautiful there is no need to exit the movie hall, just stay as long as the show is on.
And if we are in the show, we must act, as long as we are able. This is because we, the entities which act, are body-mind machines, which are in and of Prakriti. All of Prakriti acts, and is acted upon. Yat kincha jagatyaam jagat. As long as there is a body-mind, that body-mind must act. All actions matter to Prakriti. The entirety of Prakriti acts to give me the breath I breathe, the food I eat, the ground I walk upon. If I wish to continue breathing, eating, walking, I must act, do my part.
The question then shifts to: what will I do? The answer which naturally suggests itself is: serve. How you interpret this is up to you.
One action is still very important. The yogic practices and exercises (which sometimes is mistakenly called meditation) help me maintain my alertness and awareness and stop me slipping into the old mode where the world revolved around me. I must continue them with energy.