That works too, with measles on the rise, maybe that’ll help more people with hand washing.

That’s what the time machines are for. Gotta go back and make it a habit for your 3 year old self, so that it sticks with you more in your adult life. Basic habits like brushing your teeth before bed, washing your hands before eating, and others commonly taught to young children tend to stick better. I wonder if it’s more about the percentage of life with the habit, rather than current habit holding streak that helps keep the habit.