We ought not to grieve or become irritated at anything because, by frequent vexation and irritability, we form the morally and physically very injurious habit of irritability, whilst by bearing opposition with equanimity we form the good and useful habit of enduring everything calmly and patiently.
'God does not create crosses for people ie cleansing spiritual and physical sufferings. And however heavy that cross may be for that individual, the tree that produces its timber grows from the soil of his heart.' The Starets also said: 'If a person walks a straight path, for him there is no cross. However, when he starts to lurch from one side to the other, then different circumstances appear which push him back onto the right track. These elements constitute a cross for a person. Of course they occur differently, according to the individual’s need.' 'Sometimes The cross is a mental one, confusing the individual with sinful thoughts. But the person is not at fault if he doesn’t accede to them. The Starets cited an example: ‘ Once a female ascetic was agitated for a long period over having unchaste thoughts. When Christ appeared and drove them away from her, she cried out to Him: ‘Sweet Jesus, where were You up to this time?’ Christ replied: ‘I was in your heart.’ She said: ‘How can that be? But my heart was filled with unchaste thoughts.’ And Christ said to her: ‘Therefore understand that I was in your heart, and that you had no disposition toward those unclean thoughts but more so, endeavored to liberate yourself from them. Not being able to do so, you suffered over them, thereby preparing a place for me in your heart.’ 'Sometimes, suffering is sent to an innocent person, so that he, as with the example of Christ, suffers for others. Christ Himself suffered for people. Likewise, His Apostles were tortured for the Church and people. To have absolute love means to suffer for your close ones.'
Remember always that, once we have decided consciously to strive after righteousness, we cannot escape catastrophes and sorrows, no matter where we are.
In this order, and by this succession, the ecclesiastical tradition from the apostles, and the preaching of the truth, have come down to us. And this is most abundant proof that there is one and the same vivifying faith, which has been preserved in the Church from the apostles until now, and handed down in truth.
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.
Life is hard for you? Why, is there anyone for whom it is not hard? And do those in the world really have no troubles? Be patient, and a comforter will come in time. The Lord said, `In your patience possess ye your souls' (Lk. 21:19). If you are unable to do something and your health does not permit it, humble yourself and beg meekly [to be excused] - and above all, be patient. And if you lose patience in some situation, reproach yourself and ask God for help.
God's Scripture gives proof in numerous passages that man must undergo many disturbances in this life; and also that many consolations are at hand. With these, a spirit of sufficient vigor and awareness of the right should overcome present discomforts and look to those things that promise everlasting joy.
We must through tribulation enter into the kingdom of God (Acts 14:22).The tribulations draw the mercy of God to the soul like the wind moves the rain. As the rain, if it falls very heavily when a plant is young and delicate, it will rot the plant and the fruit will be lost, while the wind will dry out a plant in part and secure it, so it is with the soul. Relaxation, carefreeness and comfort make it flabby and dissolute but temptations fortify it and unite it to God...
When a man walks the straight path, he does not have a cross. But when he begins to step away from one side to another, then various circumstances arise that push him back onto a right path. These pushes comprise a man's cross. They vary, of course, according to what each individual needs.
When walking in the way of righteousness, it is impossible not to meet with trouble, or that the body should not suffer pain and weakness and should remain immutable, if we want to live in virtue.
Every tribulation reveals the state of our will, whether it inclines to the right or to the left. An unexpected tribulation is called temptation, because it subjects a man to a test of his secret dispositions.
A man of good sense, realizing how beneficial are the judgments of God, thankfully endures the tribulations they bring him, holding none guilty but his own sins. But a foolish man, when he sins and is punished, regards as the culprit of his ills either God or men, not discerning the wisdom of Divine Providence.