This isn't metaphor-it's neurobiology. The patterns established during feeding-how you recognized hunger, expressed needs, experienced satisfaction-got encoded in your limbic system at a pre-verbal level.
These same patterns influence, your sexual desire and functioning, what you choose as a career and how fulfilled you feel. The way in which you experience and know your relationship needs and how you express them as well as your boundaries, your creative impulses, how you express them and your capacity to know and pursue what you want.