Temptations are common to man.
There hath no temptation taken you but such as is common to man: but God is faithful, who will not suffer you to be tempted above that ye are able; but will with the temptation also make a way to escape, that ye may be able to bear it.
- 1 Corinthians 10:13 (KJV)
When I'm tempted in some way, I immediately fall back on prayer, recognizing that my own strength isn't enough.
I can do all things through Christ which strengtheneth me.
- Philippians 4:13 (KJV)
The one who is in you is greater than the one in the world, e.g. the victory is already yours.
Ye are of God, little children, and have overcome them: because greater is he that is in you, than he that is in the world.
- 1 John 4:4 (KJV)
Declare the victory over your temptation today, and pray to God the instant it comes up.
God is faithful, and sooner or later you will overcome it.