I would encourage you to meditate on the following explanation of what is means to be Gospel centered from the Elders and leaders of Redeemer Presbyterian Church in Newport Beach, California:
The gospel is at the center of all we do. The “gospel” is the good news that through Jesus, the Messiah, the power of God’s kingdom has entered history to renew the whole world. Through the Savior God has established his reign. When we believe and rely on Jesus’ work and record (rather than ours) for our relationship to God, that kingdom power comes upon us and begins to work through us. We witness this radical new way of living by our renewed lives, beautiful community, social justice, and cultural transformation. This good news brings new life. The gospel motivates, guides and empowers every aspect of our living and worship.