What is the name of a pscyhologist who spoke out against suicide ideas and wrote some self-help books, but later tried to kill himself?

Frankl died of heart failure in Vienna on 2 September 1997. He is buried in the Jewish section of the Vienna Central Cemetery.

• Wikipedia

He was 92 when he died. He treated suicidal thoughts / tendencies, but there's no info suggesting he actually tried to kill himself.

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