Struggle with drink, adopting old attitude (9)
I believe the answer is:
viewpoint
'attitude' is the definition.
(viewpoint is a kind of attitude)
'struggle with drink' is the wordplay.
'struggle' becomes 'vie' (I've seen this before).
'with' becomes 'w' (abbreviation).
'drink' becomes 'point' (I can't justify this - if you can you should believe this answer much more).
'vie'+'w'+'point'='VIEWPOINT'
'adopting old' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for viewpoint that I've seen before include "Way of thinking" , "Outlook; opinion" , "that might be found on hill" , "Opinion or position which is particularly good for admiring the scenery" , "Place from which to admire the scenery" .)