First Corinthians 10:31 tells us that even our eating and drinking should be done to the glory of God. God's glory is like a pair of colored glasses that tint everything you see. Whatever you do should be done for His glory. The question you must now ask about everything is, "How will this glorify God?"
God is intent on displaying who He is. Psalm 19:1 says: "The heavens are telling of the glory of God; and their expanse is declaring the work of His hands." The whole earth gives us a picture of the glory of the invisible God. Nature preaches us a sermon on His glory. Everything should point us to His glory, and if it doesn't, it's because we are too "me-centered" to look for His glory. And if we are centered on ourselves, we are in sin. Sin is simply falling short of glorifying God. Romans 3:23 says: "All have sinned and fall short of the glory of God." You don't have to rob a bank to be a sinner. All you have to do is try to take the glory that belongs to Him alone. We are all cosmic thieves.