Some will say that ‘you’ are your body. That everything that happens to ‘you,’ happens to your body, and vice versa. That you ought to identify, therefore, with your organs and tissues, your face, your DNA, and your brain — in other words, the totality of your biological organism.
Certainly there’s a sense in which you do, already, identify with your body — behaviorally, that is. You’ll go to great lengths to avoid losing an arm or a leg. And if you do lose one, it’ll feel like you’ve lost a part of yourself. It won’t be the end of the world; clearly, ‘you’ will still exist. But you’ll feel less wholly yourself than before you lost the limb. The case is even stronger, of course, if you were to lose part of your brain.
I’m not suggesting that you take this road, mind you. To identify with your biological organism is appealing, certainly, but also problematic. In particular, the body is awfully hard to pin down. If you are your body, where do ‘you’ end? Where does your body leave off and ‘the rest of the world’ begin?
There’s just no good answer to this question.