Did you quote these verses from James to him?
"Ye lust, and have not: ye kill, and desire to have, and cannot obtain: ye fight and war, yet ye have not, because ye ask not.
Ye ask, and receive not, because ye ask amiss, that ye may consume it upon your lusts."James 4:2-3
See also this words from Oswald Chambers:
What’s the good of prayer?
“Lord, teach us to pray.” Luke 16: 1.
It is not part of the life of a natural man to pray. We hear it said that a man will suffer in his life if he does not pray; I question it. What will suffer is the life of the Son of God in him, which is nourished not by food, but by prayer. When a man is born from above [born again], the life of the Son of God is born in him, and he can either starve that life or nourish it. Prayer is the way the life of God is nourished. Our ordinary views of prayer are not found in the New Testament. We look upon prayer as a means of getting things for ourselves; the Bible idea of prayer is that we may get to know God Himself.
“Ask and ye shall receive.” We grouse before God, we are apologetic or apathetic, but we ask very few things. Yet what a splendid audacity a childlike child has! Our Lord says –“Except ye become as little children.” Ask, and God will do. Give Jesus a chance, give Him elbow room, and no man will ever do this unless he is at his wits’ end. When a man is at his wits’ end it is not a cowardly thing to pray, it is the only way he can get in touch with Reality. Be yourself before God and present your problems, the things you know you have come to your wits’ end over. As long as you are self-sufficient, you do not need to ask God for anything.
It is not true that “prayer changes things” as that prayer changes me and I change things. God has so constituted things that prayer on the basis of Redemption alters the way in which a man looks at things. Prayer is not a question of altering things externally, but of working wonders in a man’s disposition.
[by Oswald Chambers “My Utmost for His Highest” p.241 for August 28th]