In his new book Brief Encounters, the 77-year-old icon recalls speaking with his pal, who died at just 51 while vacationing in Italy, in the actor's dressing room on Broadway during his 2009 stint in play God of Carnage.
Though The Sopranos alum earned accolades for his role in the dark comedy, Cavett recalls that he faced crippling insecurities.
“He described an attack of terrible anxiety that overtook him as beginning work on the play approached, with deep fears over— of all things— ability to learn and retain his lines,” Cavett writes.
The star’s mental state was so dire, Cavett claims, he felt it necessary to seek medical attention.
“He said he’d actually entered a hospital for a few days of anxiety treatment,” Cavett says.
He left behind his wife, Deborah, his teen son, Michael, and his baby daughter, Lily.