A few reminders from Paul.
God created the light to fill the physical world. He can also fill you with light. Light pushes back darkness. The light should be coming out of us for others to see and give light of the knowledge of the glory of God.
Paul may have also been reflecting on how Jesus changed him with the light.
Satan loves the darkness and tries to deaden our sense of wonder so we don’t appreciate everything He gives us daily.
God made everything just right for us to breathe, the earth to support life, the beauty of creation.
There is hope. We have heaven to look forward to.