It’s true. A flying instructor told me during a lecture on navigation.
While you are in the air, going on holiday you spend most of the time en route temporarily lost.
The on board computer does thousands of tiny course corrections every minute. So tiny that you will never know they took place. Using transponders on the ground the aircraft moves left and right to correct course all the way to your destination.
The point is that to get to your destination you will also be making course corrections to get back on track. This is perfectly normal but you must know where you intend to actually get to or you will never know you are off course in the first place.