He suffers from a lack of self-regard.

他缺乏自尊。

《牛津词典》

Here was still a lofty self - regard in her bearing the dignity of a dowager empress.

她那派头仍然带有高傲的自尊，具有皇太后一般的尊严。

youdao

This requires some narcissism, the self-regard necessary to express our authentic selves – but not the obsession with image that caused Narcissus' untimely end.

人们在表达真实的自我时，的确需要一定程度自恋和自爱，但是这种自恋却并不是痴迷于自己的虚拟的形象，否则就会像纳西索斯一样，落得个悲剧性的结局。

youdao

Their research showed that these elite athletes displayed high levels of stress management, interpersonal skills, and self regard.

FORBES: Why Wrestlers Make the Best Employees

Through Gawker, Denton wages war on self-regard or presumed self-regard, as his cast of mind is both abstract and deeply tribal, inclining him to sort nearly all people into one or another category that could be judged full of itself.

NEWYORKER: Search and Destroy

Though quitting the competition may have been an act of staggering self-regard, it was no hollow gesture.

WSJ: A Protest Without Rhyme or Reason | Postmodern Times by Eric Felten