“Losing a belief in free will has not made me fatalistic—in fact, it has increased my feelings of freedom. My hopes, fears, and neuroses seem less personal and indelible. There is no telling how much I might change in the future. Just as one wouldn’t draw a lasting conclusion about oneself on the basis of a brief experience of indigestion, one needn’t do so on the basis of how one has thought or behaved for vast stretches of time in the past. A creative change of inputs to the system—learning new skills, forming new relationships, adopting new habits of attention—may radically transform one’s life.” ― Sam Harris, Free Will 

At this point, Harris addresses the issue of change.  If we are simply the sum total of that which precedes us, then is it possible to change the direction of our life, to even choose chocolate over vanilla?  Harris draws out the complex issues of “change” in a determined world.