自(みずか)らfor one's self, personally

犯人(はんにん)が自(みずか)ら罪(つみ)を認(みと)めたので捜査(そうさ)が楽(らく)でした。

Since the criminal personally admitted his guilt, the investigation was easy. {for one's self, personally}

若者(わかもの)が自(みずか)ら命(いのち)を絶(た)つことは、とても悲(かな)しいです。

It is very sad when young people personally take their own lives. {for one's self, personally}

自(みずか)らの力(ちから)で勝利(しょうり)を収(おさ)めた選手(せんしゅ)を監督(かんとく)が讃(たた)えています。

The coach is praising the player who personally secured the victory with his own strength. {for one's self, personally}

死期(しき)が迫(せま)ってきたので、自(みずか)らの人生(じんせい)を振(ふ)り返(かえ)ってみる事(こと)にした。

Since my time of death is drawing near, I decided to personally reflect on my own life. {for one's self, personally}

プライドが高(たか)すぎる妹(いもうと)は自(みずか)ら過(あやま)ちを認(みと)めることなんて出来(でき)ないだろう。

My overly prideful sister probably can't admit her own mistakes personally. {for one's self, personally}