Egonomics
Our model is really based on a metaphor. We propose that at any point in time an individual consists of two selves. There is a forward-looking “planner” who has good intentions and cares about the future, and a devil-may-care “doer” who lives for the present.
Richard H. Thaler • Misbehaving: The Making of Behavioral Economics
It seems to me that egos emerge in order to take care of our needs in contexts where we don’t trust the strategy of surrendering to the We. The paradox is that the presence of ego is often one of the main things in the way of the We being able to take care of our needs.

The center of our conscious life is called ego. It has two concurrent characteristics: It is functional in that it is the strong grounded activating principle by which we make intellectual assessments and judgments, show feelings appropriately, and relate skillfully to other people. It can also be neurotic when it becomes attached, addicted, dualis
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