Eager to help, embracing victory (4)
I believe the answer is:
avid
'eager' is the definition.
('avid' can be a synonym of 'eager')
'help embracing victory' is the wordplay.
'help' becomes 'aid' ('aid' can be a synonym of 'help').
'embracing' is an insertion indicator.
'victory' becomes 'v'.
'aid' placed around 'v' is 'AVID'.
'to' acts as a link.
(Other definitions for avid that I've seen before include "Greedily eager" , "deeply enthusiastic" , "Impassioned about diva" , "Burning" , "Ardent about diva" .)