An electronic device and method are disclosed, including a memory, a sensor module, a communication module, and a processor. The processor implements the method, including: storing, in the memory, a panic-disorder model that is user-specific, panic-disorder information, and a plurality of guidance information for each of a plurality of panic-disorder stages, detecting a state of a user via a sensor module, detecting environmental information via a communication module, entering, by a processor, the detected state and the detected environmental information into the panic-disorder model to determine a panic-disorder stage of the user, retrieving and outputting, via output circuitry, one of the plurality of guidance information corresponding to the determined panic-disorder stage, and updating, by the processor, the panic-disorder model based on the detected state and the detected environmental information.