What Makes Me Sensient and Conscious?

What makes i me sentient and conscious? Well, that's the question, right? Is as you, as you talk and as i respond. What kinds of things might be able to indicate whether you really understand what you're saying? And that this is an interesting line of questioning,. But it's also a line of questioning that i don't think i would be able to convincingly answer. Maybe i'm projecting or anthropomorphizing.