About to take successful action to recover (6)
I believe the answer is:
recoup
'to recover' is the definition.
('recoup' can be a synonym of 'recover')
'about to take successful action' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'to take' is a charade indicator (letters next to each other).
'successful action' becomes 'coup' (I can't explain this - if you can you should give a lot more credence to this answer).
're'+'coup'='RECOUP'
Can you help me to learn more?
(Other definitions for recoup that I've seen before include "make good one's losses" , "Regain (expenditure)" , "Regain a loss through subsequent profits" , "Regain (something lost)" , "Make good a loss" .)