Shampoo doesn’t have to foam, but we add foaming chemicals because people expect it each time they wash their hair. Same thing with laundry detergent. And toothpaste—now every company adds sodium laureth sulfate to make toothpaste foam more. There’s no cleaning benefit, but people feel better when there’s a bunch of suds around their mouth. Once the customer starts expecting that foam, the habit starts growing.

Hiding what you know is sometimes as important as knowing it.

It is facile to imply that smoking, alcoholism, overeating, or other ingrained patters can be upended without real effort. Genuine change requires work and self-understanding of the cravings driving behaviours.

If you believe you can change - if you make it a habit - the change becomes real.

If you dress a new something in old habits, it’s easier for the public to accept it.

If you tell people that they have what it takes to succeed, they'll prove you right

Change might not be fast and it isn't always easy. But with time and effort, almost any habit can be reshaped.