The most common and most likely answer to this crossword clue is the 10 letter word MOTIVATION
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result MOTIVATION
Buddy explains!

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 MOTIVATION mean?
MOTIVATION noun- Willingness of action especially in behavior.
- The action of motivating.
- Something which motivates.
- An incentive or reason for doing something.
- A research rating that measures how the rational and emotional elements of a commercial affect consumer intention to consider, visit, or buy something.