If you have a dream still not come true, will you keep it until it come true?

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I have a dream to study aboard, but now I will graduate from university with a PH.D. It seems that there is no need for me to further my study any more. But I still feel that I lose something undone and can not make myself to begin my career now. I think I should visit some other university in the other countries to make my dream come ture, and then I can set to work for my future.