I think he was talking about the ego life in this world. The Course in Miracles discusses this at lenght throughout the text. Below is one example.
I keep trying to drop ego identification. My running self transcendence project is just that. My downward mobility is just that. I'm going to try this weekend and for awhile to practice outrageous renunciation. It means not going in actural marathon races but doing a self transcendence private marathon. Can I do it even if it is summer in Houston? It means getting up early just as I would for a race.
Relinquish, relinquish. Let it go. Give it up. Peace is there right after you relax and let go.
So, here I go again, hot sweaty miles with absolutely no purpose other than to forget my ambitions.
From A Course in Miracles text 4.III:
"Salvation is for the mind, and it is attained through peace. This is the only thing that can be saved and the only way to save it. Any response other than love arises from a confusion about the "what" and the "how" of salvation, and this is the only answer. Never lose sight of this, and never allow yourself to believe, even for an instant, that there is another answer. For you will surely place yourself among the poor, who do not understand that they dwell in abundance and that salvation is come.
To identify with the ego is to attack yourself and make yourself poor. That is why everyone who identifies with the ego feels deprived. What he experiences then is depression or anger, because what he did was to exchange Self-love for self-hate, making him afraid of himself. He does not realize this. Even if he is fully aware of anxiety he does not perceive its source as his own ego identification, and he always tries to handle it by making some sort of insane "arrangement" with the world. He always perceives this world as outside himself, for this is crucial to his adjustment. He does not realize that he makes this world, for there is no world outside of him.
If only the loving thoughts of God's Son are the world's reality, the real world must be in his mind. His insane thoughts, too, must be in his mind, but an internal conflict of this magnitude he cannot tolerate. A split mind is endangered, and the recognition that it encompasses completely opposed thoughts within itself is intolerable. Therefore the mind projects the split, not the reality. Everything you perceive as the outside world is merely your attempt to maintain your ego identification, for everyone believes that identification is salvation. Yet consider what has happened, for thoughts do have consequences to the thinker. You have become at odds with the world as you perceive it, because you think it is antagonistic to you. This is a necessary consequence of what you have done. You have projected outward what is antagonistic to what is inward, and therefore you would have to perceive it this way. That is why you must realize that your hatred is in your mind and not outside it before you can get rid of it; and why you must get rid of it before you can perceive the world as it really is."