Stories ought to be out of my thoughts (5)
I believe the answer is:
myths
'stories' is the definition.
(myth is a kind of story)
'ought to be out of my thoughts' is the wordplay.
'to be out of' is a deletion indicator.
'my'+'thoughts'='mythoughts'
'mythoughts' with 'ought' taken away is 'MYTHS'.
(Other definitions for myths that I've seen before include "Legendary stories" , "Legends to present truths" , "Widely held but false beliefs" , "Fabulous tales" , "Fables" .)