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think positive

Be optimistic, concentrate on the good rather than the bad, as in It's true you were fired but think positive—now you can look for a job you really like. This expression comes from the psychological doctrine of positive thinking, which gained currency with Norman Vincent Peale's popular book, The Power of Positive Thinking (1953). [Second half of 1900s]

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.