1. A computing device comprising: a processing device; and a storage resource storing instructions which, when executed by the processing device, cause the processing device to: determine an actual direction of travel of a user; determine a desired heading of the user toward a specified waypoint; determine an angular deviation between the desired heading and the actual direction of travel; and generate a three-dimensional sound that, when presented to the user, directs the user to correct the actual direction of travel by moving in a particular direction to reach the specified waypoint, the three-dimensional sound having a property that is dependent on the angular deviation between the desired heading and the actual direction of travel.