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Student looking at her cell phone.

Try this if you want healthier screen-use habits that will stick

Much like Dorothy discovers at the end of "The Wizard of Oz," the key to prioritizing time is something we've had inside all along: choice.

Michelle Drouin, professor of psychology at Purdue University Fort Wayne and author of "Out of Touch: How to Survive an Intimacy Famine," describes how smartphones and other devices help us communicate more, but also have the potential to make us feel more isolated.

Read the story in Popular Science.