地平线系列：性格的真相

<p>Michael Mosley explores the latest science about how our personalities are created - and whether they can be changed.
　　Despite appearances, Mosley is a pessimist who constantly frets about the future. He wants to worry less and become more of an optimist.
　　He tries out two techniques to change this aspect of his personality - with surprising results.
　　And he travels to the frontie...</p>