To tee off needs motivation (5)
I believe the answer is:
drive
I believe this is a double definition.
'to tee off' is the first definition.
(I've seen this before)
'motivation' is the second definition.
(I've seen this before)
'needs' is the link.
(Other definitions for drive that I've seen before include "gear" , "Hit golf ball from tee" , "computer store" , "Impel; house approach" , "spin" .)