Recognize the symptoms and their destructive end.
1 Corinthians 5:6-7a
Ephesians 4:22-24
James 1:14-15

Recognize the spiritual force behind the vice.
2 Corinthians 2:11
2 Corinthians 11:3
Ephesians 6:10-12
1 Peter 5:8

Admit that you can't change yourself, and ask the Lord to help you.
Psalm 19:12-13
Psalm 119:133

Take a militant stand, using the Word, against temptation and the Tempter.
Galatians 5:1
Ephesians 4:27
Ephesians 6:13-18
James 4:7

The Lord can overcome anything, with our cooperation.
Psalm 138:8
Jeremiah 32:27
Mark 10:27
John 8:36
Philippians 4:13
1 John 4:4

Prayers, encouragement, and reminders of others also help.
Ecclesiastes 4:9-10
Matthew 18:19-20
Hebrews 3:13
Hebrews 10:24-25
James 5:16

Publicly thank the Lord and testify of His power and victory.
Psalm 107:1-2
Psalm 35:18
Psalm 40:10