How does craving cause self-identity or self-habit?

From craving, there arises clinging, then from clinging, there arises existence or becoming, and then from becoming, we get the birth of the self-identity or self-habit. But how does craving really cause self-identity or self-habit? How are they connected? Does self-identity or self-habit arise out of a collection of likes and dislikes? How is that so?