Spot at Scottish island endlessly brings obsession (8)
I believe the answer is:
fixation
'obsession' is the definition.
(synonyms)
'spot at scottish island endlessly' is the wordplay.
'spot' becomes 'fix' (both can mean a difficult or tricky situation).
'scottish island' becomes 'Iona' (island of the Hebrides).
'endlessly' means to remove the last letter.
'iona' with its last letter taken away is 'ion'.
'fix'+'at'+'ion'='FIXATION'
'brings' acts as a link.
(Other definitions for fixation that I've seen before include "thing" , "Unhealthy preoccupation" , "Obsessive interest" , "Obsession" .)