Thank you for your reply.
Jar, I think this is a good discussion as it is comparing Sidelined's humanist(?) morals with Christian morals to discover parallels or diversions.
Preoccupation with self is again something that is necessary in reaching a full life.
I disagree. Preoccupation with Christ is what is necessary in reaching a full life. To do this you cannot be preoccupied with yourself. But you cannot understand this, because you have not experienced it. You may think you are living a full life, but you are only half alive. How do I know? I've talked to people like you who eventually converted and discovered what it truly meant to be occupied with Christ and I have experienced it myself.
There are unavoidable occasions where life neccesitates selfishness because there is only so much time you can devote to any one thing without it being a detriment to other areas of your life.
True, we must do things for ourselves. But the issue is not what we do, but why we do it. What is our motivation? You (the humanist) are motivated by life's pleasures or by helping others who need you or for the advancement of society. The Christian is motivated in all things by love for God.
Getting back to lust: another way to look at it is that lust is the belief that obtaining a certain thing will make you happier. Lust/arrogance is also the source of all frustration. A humble person occupied with God is never frustrated. As Paul says, "I have learned the secret of being content in any and every situation."