In the book of Philippians, the primary theme is joy, but the entire book can be considered good cognitive therapy. It encourages and instructs us on how to transform our thoughts and see things from God’s perspective.
When we see through God’s eyes and trust His plan, His sovereignty, and His control over everything, it becomes easier to obey the command to “Rejoice in the Lord always. I will say it again, rejoice!”
If I see God as greater than my circumstances, I don’t see the giant Goliath as the Israelites saw him, rather, I see God how David saw Him: as the God who can conquer my giants. And therefore David rejoiced in the opportunity to confront the giant and give God the glory (1 Samuel 17).
How can you change your perspective, trust God, and decide to rejoice?