2 Corinthians 10

For the weapons of our warfare are not carnal but mighty in God for pulling down strongholds,  casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ. vv.4-5

Read chapter 10
Do you control your thoughts or your thoughts control you?  What we fight against are the strongholds or walls that are blocking the knowledge of God.  It's the mind of others and our own that we fight with more than the physical fight.  The bigger battle is Satan's battle of deception, controlling the mind.  We ought not to fight this spiritual battle with carnal things but with spiritual things: the truth which is God's Word.  We need to take captive our thoughts and make them obedient in Christ; it takes discipline just as it takes discipline to train other body parts into the way we want them.

The strongholds of philosophy, paganism, and sin should be demolished, and all the opinions, plans, and purposes of the world should become subject to the all-conquering Redeemer." (Barnes' Notes on the Bible)

What are some mental walls you need to break down?  What thoughts are you struggling to make captive by the truth?