One of the more helpful works I have read concerning gospel-centered Christianity is Jared Wilson‘s Gospel Wakefulness. Perhaps most insightful to me was Jared’s point that gospel-centeredness can be explained but cannot be taught. In other words, it requires a grace of the holy spirit. I do not think this realization moves gospel-centeredness into a neo-gnostic or higher life kind of category. It simply is the realization that it is God who must work in us in our sanctification. Thus the phrase Jared Wilson uses is Gospel Wakefulness.
In this video, Jared Wilson explain what Gospel-Wakefulness is. This is not a short video, by any measure. But it is worth taking the time – whether in one sitting, or in a series of starts-and-stops.