“But God forbid that I should boast except in the cross of our Lord Jesus Christ, by whom the world has been crucified to me, and I to the world.” (Galatians 6:14, NKJV)
Paul’s focus on the cross was exceptional. In this verse he emphasizes that there is nothing to boast about except the cross of the Lord Jesus Christ. That should be our focus as well. What is there to boast about in life? Anything we have has been given to us as a gift from God to be used for His glory (1 Cor 4:7). We cannot boast that strengths and abilities come from inside of us because they were planted there by God.
Note also that the cross is a demarcation between us and the world. The cross is a turning point. Every true Christian was crucified with Christ on the cross and we have been raised with Him. At the cross the world was crucified to me and I to the world. The world should not have the kind of influence over us that it often does. John writes that if we love the world, the love of the Father is not in us (1 John 2:15).
The cross was a place of death and we need to recognize more and more that our death with Christ there means there is a decisive separation between us and the world system. That separation from the world and to God should be lived out every day in our walk of faith.