Succeed about your job (7)
I believe the answer is:
replace
'succeed' is the definition.
(I know that replace is a more specific form of the action succeed)
'about your job' is the wordplay.
I cannot quite understand how this works, but
'about' could be 're' (regarding) and 're' is found in the answer.
'job' could be 'place' (place is a kind of job) and 'place' is present in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for replace that I've seen before include "Provide a substitute for" , "Put back or substitute" , "Substitute, supersede" , "Substitute, supplant" , "Put back in original position" .)