In the first adulthood the axis lies between ego and world. The ego, one’s conscious being, struggles to project itself into the world and create a world within the world.
Hollis explicitly names an ‘ego and world’ axis as the operative structural relationship of early adulthood, providing the clearest direct articulation of an ego-persona or ego-world axis within a developmental sequence of multiple psychic axes.
, The Middle Passage: From Misery to Meaning in Midlife, 1993thesis