In James 3:13-18 we find some excellent relationship advice. In this section of Scripture James lays out for us the two ways in which we can approach our relationships. We’ll call option one the way of humility (v13). Humility is putting others before yourself (Phil 2:3-4) and when you practice humility you’ll find peace in your relationships with others (v18). We’ll call option two the way of selfishness (v14). Selfishness is putting yourself before others and when you sow selfishness you’ll reap discord in your relationships (v16).
James is clear. The cause of relational dysfunction boils down to selfishness. God’s cure for relational dysfunction is humility.