In this passage, James talks about slander, arrogant planning, and riches.  When we are walking in pride and in our flesh, what gets manifested is slander, boasting in our self-made plans, and trusting in money for security and satisfaction.  But when we fix our minds on Christ and who we are in Him, our speech is uplifting, we trust in God's plan for our lives, and He is our security and satisfaction.