This 2010 interview of Valerie Jarrett explains the problem:
New Yorker editor David Remnick’s interview with her for his 2010 book The Bridge.
“I think Barack knew that he had God-given talents that were extraordinary. He knows exactly how smart he is. . . . He knows how perceptive he is. He knows what a good reader of people he is. And he knows that he has the ability — the extraordinary, uncanny ability — to take a thousand different perspectives, digest them and make sense out of them, and I think that he has never really been challenged intellectually. . . . So what I sensed in him was not just a restless spirit but somebody with such extraordinary talents that had to be really taxed in order for him to be happy. . . . He’s been bored to death his whole life. He’s just too talented to do what ordinary people do.”