As a Christian, I have noticed the enemy attacks these 4 areas:

1. Time with God
2. Studying the word
3. Praying
4. Fasting

These 4 things builds up our spiritual man. Remember, “the weapons of our warfare are not carnal but they are mighty through God to pull down strongholds.”- 2 Cor 10:4
If these 4 things weren’t powerful, the enemy wouldn’t attack them.