Choose to be guided, being drunk (7)
I believe the answer is:
pickled
'drunk' is the definition.
(I've seen this before)
'choose to be guided' is the wordplay.
'choose' becomes 'pick' (picking is a kind of choosing).
'to be guided' becomes 'led' ('led' can be similar in meaning to 'guided').
'pick'+'led'='PICKLED'
'being' acts as a link.
(Other definitions for pickled that I've seen before include "Preserved in vinegar or brine" , "Preserved in liquid" , "Soused" , "Preserved - drunk" , "Brahms and Liszt" .)