How does this feeling of Somebody cause fear to arise? What is the connection? So here, when Somebody is threatened, when this Somebody feels that something might happen to me, that I am in danger, that is how fear comes.
How does this feeling of Somebody generate anxiety about the future? So with this feeling of Somebody, you feel that in the future everything should go according to the idea this Somebody has. And if you are uncertain about that, then this is how anxieties arise.
So these are some simple, practical examples, how this idea of Somebody is related to self, and how suffering and these negative emotions arise. No-self or emptiness is when Somebody becomes a Nobody!