In a recent column I said thumb-sucking is not, as was once thought, a sign of insecurity or other psychological problems. Well-adjusted children suck their thumbs and grow up to be well-adjusted adults. My daughter, who began sucking her thumb minutes after she was born — I think she used it to pass the time in utero — occasionally sucked her thumb to get to sleep when she was in high school.
Parenting Advice with John Rosemond - Most kids stop thumb-sucking on their own