When our hearts are reluctant we often have to compel ourselves to pray for our enemies, to pour out prayer for those who are against us. Would that our hearts were filled with love! How frequently we offer a prayer for our enemies, but do it because we are commanded to, not out of love for them. We ask the gift of life for them even while we are afraid that our prayer may be heard. The Judge of our souls considers our hearts rather than our words. Those who do not pray for their enemies out of love are not asking anything for their benefit.
If you examine your life well, you will find many instances when God showed His unmistakable mercy to you. Trouble was brewing, but it passed you by for some reason. God delivered you. Acknowledge these and thank God, Who loves you.
This reversal of thoughts is the strongest means, not only for repelling accidental critical thoughts, but also for completely freeing yourself of this vice…
He Who before our offence forbids us to sin, after our offence ceases not from waiting for us to repent, He Whom we have rejected calls after us. We have turned away from Him, but He has not turned away from us.
He shall be known by his crimes of inhumanity and lawlessness, so as to outdo all unrighteous and ungodly men who have gone before him; displaying against all men, but especially against us Christians, a spirit murderous and most cruel, merciless and crafty.
Keep both eyes open. This is the measure of humility: if a man is humble he never thinks that he has been treated worse than he deserves. He stands so low in his own estimation that no one, however hard they try, can think more poorly of him than he thinks of himself.
You have the book of discourses by St. Macarius of Egypt. Kindly read the 19th discourse, concerning a Christian's duty to force himself to do good. There it is written, 'One must force oneself to pray, even if one has no spiritual prayer.' And, 'In such a case, God, seeing that a man earnestly is striving, pushing himself against the will of his heart (that is, his thoughts), He grants him true prayer.' By true prayer, St. Macarius means the undistracted, collected, deep prayer that occurs when the mind stands unswervingly before God. As the mind begins to stand firmly before God, it discovers such sweetness, that it wishes to remain in true prayer forever, desiring nothing more.
Since the enemy watches you constantly, waiting for an opportunity to sow evil in you, be doubly watchful over yourself, lest you fall in the nets spread for you. As soon as he shows you some fault in your neighbor, hasten to repel this thought, lest it take root in you and grow. Cast it out, so that no trace is left in you, and replace it by the thought of the good qualities you know your neighbor to possess, or of those people generally should have. If you still feel the impulse to pass judgment, add to this the truth that you are given no authority for this and that the moment you assume this authority you thereby make yourself worthy of judgment and condemnation, not before powerless men, but before God, the all-powerful Judge of all.
To more conveniently become accustomed to remembering God, the fervent Christian has a special means, namely, to repeat ceaselessly a brief prayer of two or three words. Mostly this is 'Lord, have mercy.' or 'Lord Jesus Christ, Son of God, have mercy on me, a sinner.' If you have not yet heard of this, then hear it now, and if you have not done it, then begin from this hour to do it.
When you intend to do something and see that your thought is perturbed, and if after invoking God's Name it remains perturbed even by a hair's breadth, know from this that the action you mean to commit is from the evil one and refrain from commiting it. For nothing done with perturbation is pleasing to God.
St. John Climacus was asked if there are reliable signs by which it's possible to know whether a soul is drawing near to God or moving away from Him. After all, regarding ordinary things there are clear signs as to whether they're good or not. When, for instance, cabbage, meat or fish begins to rot, it's easy to notice it, since the rotting object begins to give off a foul odor, the color and taste change, and its external appearance witnesses to its deterioration. Well, and what about the soul? After all, it's bodiless and can't give off a bad smell or change its appearance. To this question the Holy Father replies, 'A sure sign of the deadening of the soul is the avoidance of church services.'
For this present life is but a way by which we travel towards our heavenly home. And because of this we are, in the inscrutable wisdom of God, wearied by frequent disquiet, so that we may not come to love the way more than our home. For there are travelers who when on their way see some smiling field, while they delight in its beauty, they slow their steps and turn aside from the straight path they had begun. The Lord therefore has made the way of this world hard for His Elect in their journey to Him, so that none of them may take his rest in this life, enjoying the beauty of the way, but may hasten speedily towards Him rather than linger by the way; or lest, delighting in the way, they come to forget they once longed for their heavenly home.
When we see sinners we must always weep for ourselves first over their failure. Perhaps we have fallen in the same way; or we can fall, if we haven't yet. And if the judgment of the teaching office must always eradicate vices by the power of discipline, we must nevertheless make careful distinctions: we should be uncompromising about vice, but compassionate to human nature. If a sinner has to be punished, a neighbor has to be supported. When he has nullified what he has done by his repentance, our neighbor is no longer a sinner. With the righteousness of God he turns against himself, and what the divine righteousness reproves he punishes in himself.
There is one method which, if practiced with full attention, will seldom allow anything passionate to slip unnoticed into the heart. This is to examine our thoughts and feelings, so as to discover which they tend: towards pleasing God or towards pleasing ourselves.