Bothered, deep rest being tricky (8)
I believe the answer is:
pestered
'bothered' is the definition.
(I've seen this in another clue)
'deep rest being tricky' is the wordplay.
'being tricky' is an anagram indicator.
'deep'+'rest'='deeprest'
'deeprest' is an anagram of 'PESTERED'.
(Other definitions for pestered that I've seen before include "Harassed, annoyed" , "Annoyed continually" , "Annoyed with frequent questions or requests" , "Constantly irritated by deer pets" , "Badgered with repeated requests" .)