The ego is poison, but we're stuck with it. We can't live without it. It wants to insert itself in every thought we think. Haecceity. It has something to do with how the will to live manifests itself. The sex drive. The only thing we can do is wrestle with it. Put it "under erasure," as Derrida says. Use the I against I.
Consciousness without identity, as Ani DiFranco sings, is the preferred state, but it's tough to get there.