Overcome vice with virtues…

Gluttony should be destroyed by self-control; unchastity by desire for God and longing for the blessings held in store; avarice by compassion for the poor; anger by goodwill and love for all men; worldly dejection by spiritual joy; listlessness by patience, perseverance and offering thanks to God; self-esteem by doing good in secret and by praying constantly with a contrite heart; and pride by not judging or despising anyone in the manner of the boastful Pharisee (cf. Lk. 18:11-12), and by considering oneself the least of all men.
–Saint John of Damascus (c. 676-750)

Kingdom of heaven…

There is only one way leading upwards for all who see, lightened with heavenly light. But many and dark and contrary are the ways of those who see not. This way leads to the Kingdom of heaven, uniting man to God: but those ways bring down to death, separating man from God. Therefore it is necessary for you and for all who care for their own salvation to make your course unswerving, firm, and sure by means of faith.
–Saint Irenaeus of Lyons (late Second Century)