Take him on a trip.
Yep, it starts with the trip itself. Maybe there are some 15-year-old boys who would enthusiastically embrace the opportunity to be their mother’s travel companion, going off on wild adventures in exotic lands. Mine doesn’t. “Grudgingly agrees” would more aptly describe his attitude to our current five-month Ecuadorian escapade. In fact, just being here seems to elicit “this sucks” from him.