Feeling-being is a term used to describe the ‘being’ that most humans (as of writing this) experience themselves as being. Everybody is a feeling-being, except for actually free people.
Feeling-beings can temporarily go into abeyance to allow a Pure Consciousness Experience to happen, which is when the actual flesh and blood body that the feeling-being is inhabiting, is able to directly experience itself as being alive.
Being conceived and born is how one becomes a feeling-being. It’s primarily a genetic inheritance, which via environment, socialisation, and cultural conditioning develops a social identity.(edit by @Andrew )