Tiandra Cox uses the grocery delivery service Instacart several times a week and routinely orders from Amazon Prime (AMZN). It’s a luxury, she said, but it has helped her in ways she never expected. Cox, 30, a mother of two who works full-time while pursuing a bachelor’s degree, used to suffer from panic attacks, especially in her local grocery stores around Indianapolis. But she hasn’t had one since she stepped up her use of time-saving services.

“If I didn’t have those services helping, I don’t think I would have enrolled in schoo…
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