The article begins:
"If I can just finish this project," says my ultrabusy friend Nancy, "I can stop worrying." She's said this every time I've ever spoken to her. No matter how much work Nancy finishes, by the time it's done she's fixating on a whole new crop of chores. In our achievement-obsessed society, this is "normal." But I realized just how insane it is when a friend was dying of cancer. On her deathbed she managed to joke with me, "Hey, at least I only have one more thing on my to-do list."
Losing three friends last year brought me up short and made me realize how much time I waste thinking about things that don't matter or trying to control things I can't. It's a lesson I'm still struggling to learn.
If you have issues with worrying, you should read more: http://www.oprah.com/spirit/How-to-Stop-Worrying-Advice-for-Worrywarts#ixzz1qpBc6nVZ