I get no credit for putting down celebrity life (11)

I believe the answer is:

ghostwriter

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'life' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe there's an association between them I don't understand?

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for ghostwriter that I've seen before include "scibe for the incapable" , "second involved in an autobiography?" , "Maybe Sheridan Le Fanu" , "Author denied credit" .)

I've seen this clue in The Sunday Times.

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