I snore. My first wife had a perfect fix — she whacked me upside the head with her elbow. (She swore she never had a memory of doing it.) Worked every time. Eventually my brain was trained to stop my snoring before I got whacked.
Since I would come wide awake with a pounding heart, my sleep did badly, of course. Sometimes I would move to the couch in the living room.
Current wife (of 22 years) I have learned to sleep on my side. Much better.