Body
Oneself
noun
The kanji is somebody, but the word is body. I guess somebody is somebody's body, so they are similar at least.
み
Since this word is made up of a single kanji, it probably uses the kun'yomi reading. You did not learn this reading, so here's a mnemonic to help you to remember: Who is that somebody? Who is that body? Why, of course it is me (み).
リストラで、身も心もズタズタです。
Because of my layoff, physically and mentally I'm torn apart.
この魚の身はたん白でおいしいね。
This fish meat is light and delicious, isn't it?
現金は常に身につけておく方がいい。
You should always carry cash on you.