The most common and most likely answer to this crossword clue is the 6 letter word CORING
I've seen this crossword clue in The Times
C
O
R
I
N
G
Buddy explains!
The straight part
We know that "Taking heart/ from" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case taking heart/ from = coring.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 CORING mean?
CORING verb- To remove the core of an apple or other fruit.
- To extract a sample with a drill.
- The production of a core by means of drilling
- The dual of a ring.