to be treated in the same unpleasant way that you have treated others
自分のしたことの報いを受ける (jibun no shita koto no mukui o ukeru)
"He's always rude to people, so I'm glad he finally got a taste of his own medicine."
"彼はいつも人に失礼なので、ついに自分のしたことの報いを受けてうれしいです。" (kare wa itsumo hito ni shitsurei na node, tsuini jibun no shita koto no mukui o ukete ureshii desu)
to eliminate something completely
to guide someone towards the correct path or decision
to talk too much and for a long time
an emotionless or mechanical reaction
extremely thankful
to improve one’s skill or knowledge