Controlled by a higher consciousness

How much of our life is really in our control? Are not the events in our life (and maybe also how we react to them) influenced and driven by a higher consciousness, which we are not aware of? Say, for example Arjuna’s life.. Isn’t his succumbing to despair in the battlefield of Kurukshetra preplanned, so that Lord Krishna’s purpose of coming to the earth gets fulfilled? Did he really have any choice to make when Lord Krishna asked him to take on the battlefield after explaining to him the Bhagwad Gita? Was there ever a possibility that Arjuna could have said no to the battle? What is the point of ‘our’ being, if we are just following a predestined plan through our hearts, and that our choices also are not actually voluntary.