"Look Again" authors Tali Sharot (left) and Cass R. Sunstein explore how seeing things with fresh eyes can improve happiness, relationships, work and community. The blessing comes as diminished sensitivity to negative stimuli; the curse is that insensitivity relieves the pressure to change things and maybe make life better. CNN: What do you recommend for people considering big life changes? Sunstein: The data we have suggests, if you’re seriously thinking of making a life change, you probably should. Research shows that when people on the fence about moving to a different city, taking a new job or some other big life change do take the plunge, they report being better off months later.

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Persons: shivers, Simon, Shuster, Tali Sharot, Cass R, it’s, we’re, “ I’ve, Michael Lionstar, Ross Lincoln, I’m, they’re, you’re, you’ll, Jessica DuLong, ” Organizations: CNN, Harvard University, Shuster CNN, Variety Locations: Brooklyn , New York