Most Americans believe that their major problem is something that has happened to them, and that their solution is to be found within. In other words, they believe that they have an alien problem that is to be resolved with an inner solution. What they gospel says, however, is that we have an inner problem that demands an alien solution—a righteousness that is not our own.--'Preaching with the Culture in View,' in Preaching the Cross (Crossway 2007), 81
That's very clarifying.
The world says: the problem is outside you, the solution inside you.
The gospel says: the problem is inside you, the solution outside you.