When two people’s right conflict, who wins?

For example, i have two lungs. You are in a car accident and both your lungs have failed. I could donate a lung and save your life.

Your right to live comes up against my right to control my own body. My right overrules your right. Even if I was the one who caused the accident that damaged your lungs. I can be found to have broken laws causing the accident, but I can’t be forced to donate an organ.