Our thought patterns fundamentally shape who we become and how we experience life, as Proverbs 23:7 teaches. The heart in biblical terms refers to our soul (mind, emotions, will) and spirit working together. When these are united, we experience spiritual health; when divided, we face internal conflict. God designed an authority structure where our spirit follows Christ, our soul follows our spirit, and our body follows our soul. Negative thoughts produce harmful chemicals in our bodies, while positive thoughts promote health. By renewing our minds with Scripture and creating healthy environments, we can take every thought captive and align our lives with God's truth.