You Can't Know Where This Ends Up

Cheryl: I was so glad that we're going to talk about regret, you know, because it's like shame. Steve: We've all experienced regret and the problem is not that we feel it, but that we don't learn from it. The final episode of Dear Sugars will be a bittersweet one. You can send us your letters at deershugars.com. And please check out our column, The Sweet Spot on NYTimes.com.