Kasey Price and Sheryl Kloehr defines "taking your thoughts captive" as it relates to your worth and identity as a person and in Christ. They cover how to combat negative thoughts and not give time or life to them to avoid the emotional drain.
Recognize thoughts either that come from the Lord or a thought that is not of God.
Speaks truths to replace negative thoughts.
...and every arrogant obstacle that is raised up against the knowledge of God, and we take every thought captive to make it obey Christ.
2 Corinthians 10:5 NET
God may give you thoughts or prompt you to reach out to someone. Listen to those cause that person may need that blessing.
Finally, brothers and sisters, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable-if anything is excellent or praiseworthy-think about such things.
Philippians 4:8 NIV