A wearable device comprising: a biological-signal sensing unit configured to sense a biological signal of a user wearing the wearable device; a vehicle-state sensing unit configured to sense a movement state of a vehicle driven by the user wearing the wearable device; and a controller characterized in that the controller is configured to: identify parking events for the vehicle driven by the user wearing the wearable device, determine levels of user tension for multiple different parking modes and multiple different parking directions by, for each of the identified parking events: determining a parking mode and a parking direction using a result of sensing by the vehicle-state sensing unit, measuring a level of user tension for the parking mode and the parking direction based on the biological signal of the user that is sensed while the vehicle is being parked, and determine a level of user preference for each of the multiple different parking modes and each of the multiple different parking directions using the determined levels of user tension, wherein the controller is further configured to select the parking mode and the parking direction that the user prefers based on the determined level of user preference for each of the multiple different parking modes and each of the multiple different parking directions, and to provide the user with information relating to a parking space where the vehicle is able to be parked in the parking mode and the parking direction that are selected. a biological-signal sensing unit configured to sense a biological signal of a user wearing the wearable device; a vehicle-state sensing unit configured to sense a movement state of a vehicle driven by the user wearing the wearable device; and a controller characterized in that the controller is configured to: identify parking events for the vehicle driven by the user wearing the wearable device, determine levels of user tension for multiple different parking modes and multiple different parking directions by, for each of the identified parking events: determining a parking mode and a parking direction using a result of sensing by the vehicle-state sensing unit, measuring a level of user tension for the parking mode and the parking direction based on the biological signal of the user that is sensed while the vehicle is being parked, and determine a level of user preference for each of the multiple different parking modes and each of the multiple different parking directions using the determined levels of user tension, identify parking events for the vehicle driven by the user wearing the wearable device, determine levels of user tension for multiple different parking modes and multiple different parking directions by, for each of the identified parking events: determining a parking mode and a parking direction using a result of sensing by the vehicle-state sensing unit, measuring a level of user tension for the parking mode and the parking direction based on the biological signal of the user that is sensed while the vehicle is being parked, and determine a level of user preference for each of the multiple different parking modes and each of the multiple different parking directions using the determined levels of user tension, determining a parking mode and a parking direction using a result of sensing by the vehicle-state sensing unit, measuring a level of user tension for the parking mode and the parking direction based on the biological signal of the user that is sensed while the vehicle is being parked, and determine a level of user preference for each of the multiple different parking modes and each of the multiple different parking directions using the determined levels of user tension, wherein the controller is further configured to select the parking mode and the parking direction that the user prefers based on the determined level of user preference for each of the multiple different parking modes and each of the multiple different parking directions, and to provide the user with information relating to a parking space where the vehicle is able to be parked in the parking mode and the parking direction that are selected.