It is easy to fall into pride by thinking that we can conquer temptations without prayer, fasting, and patience. This is because our fallen human nature deceives us into thinking that we can battle evil by own our power. But we must humble ourselves and remember that salvation cannot be achieved by our own strength, but only by God’s. (Matthew 19:26).
To the self righteous, you may glorify yourselves and cheer “I have conquered this temptation” deceiving yourself into thinking that you are now holy; giving you the inclination to judge the sins of your brother. However, such actions shall condemn you.
St. Caesarius of Arles teaches: “The worst kind of sin is not to acknowledge that you are sinful.” (Commentary on John 1:8).
Silouan the Athonite: “Understand two thoughts, and fear them. One says, “You are a saint,” the other, “You won’t be saved.” Both of these thoughts are from the enemy, and there is no truth in them. But think this way: I am a great sinner, but the Lord is merciful. He loves people very much, and He will forgive my sins.” (Writings, XVII.1)
St. Mark the Ascetic: “Guard your mind from self-praise and flee a high opinion of yourself, so that God does not allow you to fall into the opposite [passion to the virtue for which you boast], for man does not accomplish virtue alone, but with the help of God who sees all.” (Homilies, 85)