I think developing coping strategies is more plausible than out growing the condition. People who appear to grow out of a condition (in my opinion) just have well developed coping skills. I liken the idea to a dyslexic overcoming the difficulties inherent to that condition. Being able to read successfully doesn't mean the condition is no longer a struggle, or ceases to exist, it is just that the person has developed necessary skills that allow them to function.
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Those who cannot tell what they desire or expect, still sigh and struggle with indefinite thoughts and vast wishes. - Emerson
Selfishness is not living as one wishes to live, it is asking others to live as one wishes to live. - Oscar Wilde