I disagree. We don't need an answer and we can't have one.

I admit that I know essentially nothing about the true nature of reality and I sleep like a baby at night.

And, don't get me wrong, becoming a nihilist and apathetic over affirming to ourselves that we're powerless is a self-defeating and stupid thing to do to oneself. By every means, if you feel you have power to do something positive in your life, DO IT!

Yes, go with the flow of feeling like you're in control. I'm not saying that we should act as if we're leafs in the wind. All I'm saying is whether you do something or not, although it may always feel like it's "you" doing it, it might have nothing to do with a "mind" and a "body". It might just be that you're energy in the position of carrying out this function of the complex equation of the big bang (universe), just as individual atoms go through their motions to make these "higher functions" possible.