As a child of God, if we all did the same thing we would be like robot servants to God. No, it's not duality, but about each one of us using the talents God gave us for the purpose of His ministry to others. Whether being involved within your church if you attend one as there are many different types of ministry within the body of Christ, or just helping out others through love and compassion for those who are in need. It just all comes down to your hearts desire of how you want to serve the Lord and knowing that is what God's purpose is for you as you seek Him and know what it is you want to do is truly in God's will for you as it brings glory and honor to His name.