Brainstorm new interfaces that could introduce opportunities or threats to your business.

As fleeting commitments, diets often fail. Thinking of dietary choices as part of who you are...can give them real staying power

For an infrequent action to become a habit, the user must perceive a high degree of utility, either from gaining pleasure or avoiding pain.

To initiate (user) action, doing must be easier than thinking.

When designers intentionally trick users into inviting friends or blasting a message to their social networks, they may see some initial growth, but it comes at the expense of users' goodwill and trust. When people discover they've been duped, they vent their frustration and stop using the product.

The aim is to influence customers to use your product on their own, again and again without relying on overt calls to action such as ads or promotions.

Reducing the thinking required to take the next action increases the likelihood of the desired behavior occurring unconsciously.