You never "change", you only grow into who you always were.
Remember, time is not linear, it is toroidal, via the eternity that is Now (emptiness, "zero" point).
The universe is deterministic, and all things within it are predetermined.
Free will is only a seemingly autonomous mechanism that is chained to fate.
The actor (or "avatar") must act out certain choices that will inevitably lead it down its predetermined path.