Anyone interested in influence should start by focusing on the environment of the individual they are trying to affect. Analyze that environment and find ways to make desirable actions easy and undesirable actions difficult. Remember that the human cognitive system aims to get the best possible outcome for the least possible energy cost.

Halpern et al. ended up demonstrating the importance of loss aversion in two different ways. The more obvious is that smokers are far more likely to quit if they stand to lose money if they fail. The more subtle is that the very prospect of incurring losses makes people far less willing to enter a smoking-cessation program. Despite the greater comparative effectiveness of the deposit program, the reward program is likely to be more successful, because far more people will sign up for it.

Strategies for Enhancing Health in the Built Environment

Thinking about far-off events in terms of days, it turned out, did make a person more able to feel for his or her future self—a self who has, after all, the same wants and needs.

Re: the use of the word "users"