The most common and most likely answer to this crossword clue is the 9 letter word CLOBBERED
I've seen this crossword clue in The Guardian
C
L
O
B
B
E
R
E
D
More clues leading to the result CLOBBERED
Buddy explains!

The straight part
We know that "In the habit/beaten" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in the habit/beaten = clobbered.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CLOBBERED mean?
CLOBBERED verb- To hit or bash severely; to seriously harm or damage.
- To overwrite (data) or override (an assignment of a value), often unintentionally or unexpectedly.
- Drunk.