Writer's optimism (4)
I believe the answer is:
hope
I believe this is a double definition.
'writer's' is the first definition.
(anthony hope)
'optimism' is the second definition.
(thesaurus)
(Other definitions for hope that I've seen before include "Longing" , "The last thing in Pandora's Box" , "Cherish a desire" , "It goes with faith and charity" , "Expect and wish" .)