The grass is greener on the other side of the fence, but it still needs mowing. The humble Christian is to see his or her self-respect in the high status God gives us. If we base our status on achievement or a relationship, it will fail us. But God's love does not fail us. Note that James says much more to the rich than the humble.
Success tests our faith more subtly than failure, because it is so less painful.
The poor need to think of heaven. The rich need to think of the impermanence of the present. The rich man fades away even as he goes about his business. God has planned obsolescence for this age. Anything that loosens the grip of possessions on our lives is to be welcome.