Die by (one's) own hand negative verb phrase
To kill oneself deliberately
Vì áp lực học hành, nhiều học sinh đã tự kết thúc đời mình.
It's so sad to hear that she died by her own hand.
When being devastated and feeling hopeless, I used to want to die by their own hands.
The verb "die" should be conjugated according to its tense.
The police came to the conclusion that the man died by his own hand.
If you fall for someone's trick the first time then they are at fault.
Are you going to mess with me again? Fool me once, shame on you; fool me twice, shame on me.