Analyze your thoughts. If it's a thought of pride, fear, unbelief, lust depression, or condemnation, it needs to be cast down. That's something you have to do. Refuse to dwell on it. Turn your mind to God and make it agree with His Word.
Wrong attitudes are killers.
Arrogant, rebellious, unforgiving, and contentious attitudes open up a door for the enemy to enter our life, marriage, church, nation, and world. The devil only has access to the world through people's sin and selfishness. Jesus defeated every demonic power on the cross 2,000 years ago - but Satan is still active to the exact degree people allow him to be. Sinners are not the only ones allowing him to work. Christians allow him to work when we don't deal with our wrong attitudes.