Here is Ep. 3 of Stephen Hawking's Genius, a scientific (not mystical) look at determinism vs free will. I am still a fatalist, living in this one particular universe and not another of the infinite possible universes. I don't believe that I have free choice over anything. Everything that I do, choose, not choose, not do is based on everything that has happened prior to this moment. Including which candy I would choose.
When I sit and do nothing, things still start to happen, even without a conscious choice on my part. I have used the practice of sitting as an experiment. Not meditating, not contemplating, just sitting neutral for awhile, as an observer. Every time, I eventually do something unexpected and not consciously chosen. I might sit for 30 minutes then a new task takes over my actions. Sometimes it's just for a few minutes. I don't set limits, or rules. I just sit.
If you watch the PBS video, please let me know what you think.