A person just like you

A testimonial? I could write anything. It’s totally up to me. I can determine my own destiny, at least when it comes to this. Hmmm, destiny. But do we really even have free will at all? I mean, if our brains are a super-complex system of neurons that all obey the laws of physics and chemistry and biology, how can we change that how our brains respond to the situations presented to us? I don’t even know what I’m doing with my life anymore.