Always set out to reach the highest point (7)
I believe the answer is:
everest
'the highest point' is the definition.
(I've seen this in another clue)
'always set out' is the wordplay.
'always' becomes 'ever' (synonyms).
'out' indicates an anagram (out can mean wrong or inaccurate).
'set' anagrammed gives 'est'.
'ever'+'est'='EVEREST'
'to reach' is the link.
(Other definitions for everest that I've seen before include "The highest mountain of all (7)" , "Mountain on the Nepal-Tibet border" , "Himalayan peak" , "A mountain to climb" , "A high spot" .)