salutary
SAL-yuh-tair-eeadjMeaning having a good effect, often after a hard lesson
Memory hook SALUTE-ary: a lesson worth SALUTING. After missing the bus once, Dev sets an alarm every night and never misses it again; he salutes the lesson, which was salutary.
Losing the first game had a salutary effect on the team: they practiced twice as hard.
In context Though the low grade stung, it proved salutary; Kai began studying every night and finished the year near the top of his class.
Similar beneficial, wholesome, healthful, helpful
Opposite harmful, detrimental, deleterious
From Latin salutaris, “healthful,” from salus (health, safety).