The joy in being

Does "the joy in being" mean "the joy of being" i.e. "one enjoying because they exist"?

Extract:

This psychic fact has to do with the nature of pre-Oedipal space, which has been theorised by the psychoanalyst Julia Kristeva, who put forward the notion of a pre-Oedipal psychic space of fluidity called the imaginary or the semiotic. This psychic space is populated with partial identifications between male and female rather than definitive gender positions, akin to the expansive subjectivity we saw in Rist’s work in the previous chapter, and is, on one hand, dominated by the joy in being.?