Do what you're doing (5)
I believe the answer is:
solve
'do what you're doing' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for solve that I've seen before include "Decipher" , "Explain (a mystery)" , "Find the key - work out" , "Work out answer to puzzle" , "Person living voluntarily outside their own country" .)