Do not attempt to assess the quality of your prayer. God alone can judge its value. To us, our own prayer must always appear so poor an effort, so inadequate an achievement, that the cry of the publican spontaneously rises from our lips.
A life lived in the world can be as good, in the eyes of God, as one spent in a monastery. It is indeed only the keeping of God's commandments, love of all, and a true sense of humility that matter, wherever we are.
You ask for some way of completely eradicating irritability. The inclination to irritability is given us to use against sin, and we were never meant to use it against our fellow men. When we do, we act contrary to our true nature.
Accordingly, a man will neither be puffed up through pride, nor cast down by despair, if he uses the good things divinely bestowed on him, to the glory of the Giver; withholding his desires from the things which he knows will hurt him. And so he that would preserve himself from the wickedness of envy, from the corruption of sensuality, from the unrest of anger, from the desire of revenge, will be purified by the sanctifying power of true abstinence, and will taste the joy of imperishable delights, so that by making spiritual use of them, he will learn to change earthly possessions into heavenly, not by storing what he has received, but by multiplying more and more that which he has been given.
People, until they come to know something greater, are satisfied with the little that they have. Man is like a village rooster who lives in a small enclosure with few people and farm animals about, who knows his ten hens and is content with this life, because he knows no more. But an eagle, who circles high in the clouds, and sees great distances with his sharp eyes, who hears the sounds of the earth and revels in its beauty, who knows many lands, seas and rivers, and sees a multitude of
animals and birds, would not be content to live in a small enclosure with a rooster. It is the same in spiritual life. Whoever has not known the grace of the Holy Spirit is like the rooster who does not know the flight of the eagle; he cannot comprehend the sweetness of tender emotion and love of God. He knows God from nature and from Scripture, he is satisfied with the law and is content with his lot as is the rooster, and does not feel sorrow that he is not an eagle. But he who has experienced the Lord through the Holy Spirit, he prays day and night, because the grace of the Holy Spirit calls him to love the Lord, and the sweetness of the Lord's love gives him the ability to carry the burdens of the world with ease; his soul pines only for the Lord and searches constantly for the grace of the Holy Spirit.
When we are incapable of scaling the peaks of virtue, all we have to do is to descend into the ravine of humility. Our humility is our surest intercessor before the face of the Lord.
As a man whose head is under water cannot inhale pure air, so a man whose thoughts are plunged into the cares of this world cannot absorb the sensations of that new world.