The question of how to be a good person is one of the (few) essentials of Christianity. It begins with rejoicing. Where you find your joy (and what you regard as a badge of honor) is fundamental to being righteous. Paul did not want a righteousness of his own, like the dogs in verse 2 who were legalists. Most people, religious and secular, take a legalistic approach to being a good person (follow a list of standards â€“ the only thing that differs is the items on the list). But that doesnâ€™t work. Paul tried it, and found that not only was all his list keeping ineffective in making him a good person, but it made him a worse person in Godâ€™s eyes. The right way to be right is by knowing Christ through faith.