1. Do not forget that the devil exists.
2. Do not forget that the devil is a tempter.
3. Do not forget that the devil is very intelligent and astute.
4. Be vigilant concerning your eyes and heart. Be strong in spirit and virtue.
5. Believe firmly in the victory of Christ over the tempter.
6. Remember that Christ makes you a participant in His victory.
7. Listen carefully to the word of God.
8. Be humble and love mortification.
9. Pray without flagging.
10. Love the Lord your God and offer worship to Him only.
(via Sancte Pater)