James 4: 1 - 3
1 What causes wars, and what causes fightings among you? Is it not your passions that are at war in your members?
2 You desire and do not have; so you kill. And you covet and cannot obtain; so you fight and wage war. You do not have, because you do not ask.
3 You ask and do not receive, because you ask wrongly, to spend it on your passions.

EWTN