Ego plays brilliantly on our fundamental fear of losing control, and of the unknown. We might say to ourselves: "I should really let go of ego, I'm in such pain; but if I do, what's going to happen to me?"
Ego will chime in sweetly: "I know I'm sometimes a nuisance, and believe me, I quite understand if you want me to leave. But is that really what you want? Think: If I do go, what's going to happen to you? Who'll look after you? Who will protect and care for you like I've done all these years?"
Even if we see through the lies of the ego, we are just too scared to abandon it; for without any true knowledge of the nature of our mind, or true identity, we simply have no other alternative. Again and again we cave in to ego's demands with the same sad self-hatred as the alcoholic feels reaching for the drink that he knows is destroying him, or the drug addict feels groping for the drug that she knows after a brief high will only leave her flat and desperate.