it all depends on how you define a person. Most likely, you think that a person’s consciousness is something inside the brain, and in this case, the “external” body really influences your decisions. But that’s not how it really works. The body is also a part of you, so everything that happens inside it, including “the hormone levels”, is a part of you. And your experience is a part of you too. It’s just that you can’t control it, but that doesn’t mean it’s not your decisions. Otherwise, we will come to the conclusion that muscle memory is also not a part of you, but some kind of external factor. In general, if you are interested in my answer: yes, we always make decisions on our own.
I’ll finish my house, clear out the old tree debris, and complete all the physical work I’ve planned for years to come.