What do we have control over? Our mind, our body, our emotions?
It feels we have control over our mind, but can we choose to ignore the knowledge and experience that our mind has accumulated when we make a decision.
You may have direct control of the movements of your body. Also we know how to pleasure it, harm it, and tickle it. However, I don’t think that all the micro organisms are not in our direct control, but we may indirectly control those parts of our body by diet, exercise and other means.
I believe (also because I’d like it to be true) that we can control everything. At least surely humans can surprise themselves and each other regarding the limits of what we control. Think about so called enlightened people choosing to leave their body, Wim Hof controlling his autonomous nervous system, or Derren Brown influencing behaviour.