Rob Delaney is putting pen to paper as part of his personal therapy.

The “Catastrophe” co-writer and co-star penned an emotional essay about his 2-year-old Henry who passed away after a battle with brain cancer. Delaney, 41, shared an excerpt of the what he wrote in 2017 as part of a book proposal he started crafting following his son’s diagnosis in 2016.

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“My wife recently walked in on me crying and listening to recordings of him babbling, from before his diagnosis and surgery,” Delaney wrote. “I’d recorded his brothers doing Alan Partridge impressions and Henry was in the background, probably playing with the dishwasher, and just talking to himself, in fluent baby. F**king music, oh my God I want to hear him again.”

“I may wish Henry wasn’t in the hospital and it may make me f**king sick that my kids haven’t lived under the same roof for over a year,” he continued. “But I’m always, always happy to enter the hospital every morning and see him. It’s exciting every day to walk into his room and see him and see him see me.”

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The tragedy of the situation only served to bring Delaney closer to his child: “When he smiles, forget about it. A regular baby’s smile is wonderful enough. When a sick baby with partial facial paralysis smiles, it’s golden. Especially if it’s my baby.”

Delaney and his wife share three children, including Henry who died in Jan. 2018, and are expecting a fourth.

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Stars We’ve Lost In 2018