The best way to live “properly” is to obey the commands of Jesus as found in the Gospels, and the whole Bible.
Trying to live a Christian life without it’s manual on “how to” is impossible. At best, you will end up being a fake.
Better to worry what God thinks of you than what people think of you. If you follow 1 Corinthians 13, for instance, you are not going to be offending anyone, except for those who are offended by the law (which points out our sin and desperate need of a Messiah) and the Gospel (which points to Christ as being The Way, The Truth and The Life).
People offended by the law and the Gospel are all over the place. Let them be offended. For all you know, you’ve planted a seed in them that will later lead them toward Christ. If not, remember that God knows what He is doing, He is sovereign, and just because someone does not accept the law and Gospel, that does not mean they will never be saved.
No loving comment or behavior that models itself after Christ and His commandments will harm anyone. Often it’s light and warmth will make people ask YOU “Why do you have this hope? This light in your eyes?” Ask our Lord to guide you with the Holy Spirit as you share God’s Word in the Bible that will explain the reason for your hope.