Change should be a friend. It should happen by plan, not by accident.
Users will change their habits when the pain of their current situation is greater than their perceived pain of adopting a possible solution.
When our daughter was a toddler, she suffered from repeated ear infections. The standard treatment at that time was Amoxicillin, an antibiotic dispensed as a thick, pink liquid that tasted awful. Our daughter hated the stuff and resisted taking the medicine, even though we told her it would make her feel better, which it did.
When her ear infections continued to recur, her doctor suggested putting tubes in her ear drums, a procedure that allows the ears to drain, ...