Within reach, I eventually succeed (7)
I believe the answer is:
achieve
'succeed' is the definition.
(achieving is a kind of succeeding)
'within reach i eventually' is the wordplay.
'within' says the answer is hidden in the clue.
'ACHIEVE' is hidden in the letters of 'reach i eventually'.
(Other definitions for achieve that I've seen before include "wrap up" , "Bring to a successful outcome" , "Finish" , "Accomplish, gain by effort" , "Successfully bring off" .)