But we still have the freedom to change our minds
.. and so does every rabbit, robin and raccoon. All creatures change their minds constantly in response to internal and external change. this is what minds do, respond nimbly to changed circumstances.
You might like to think humans are different, in that we can change our minds
just because we want to; we can act on a whim, an impulse, and maybe it seems these things have no origin. But they too do have origins, in our subconscious. Neuroscientists have a nice analogy for this, it is known as the
dolphin model of cognition. Envisage dolphins in the ocean, they speed about busily mostly just under the surface and occasionally leap out of the ocean for a fleeting moment. Our thoughts are like that, they emerge fleetingly from the ocean of our subconscious, where they can become part of our known experienced stream of consciousness. All our thoughts, our hopes and fears, even seemingly spontaneous choices, they do have origins, just we are not usually aware of them.