We all need a figurative "barometer" in our life. Something that tests and indicates the "atmosphere" in our life. For Christ followers, joy is a barometer. We are given joy as a gift, and instructed to maintain it and protect it. The presence of joy does not mean that everything is going our way, but rather that we have proper perspective in life. A lack of joy does not mean that things are going poorly in life, but rather that we may have gotten priorities misaligned. Regardless of our life situation, we can and should pursue joy. When we experience it, we can know we are likely on the right track.