In the middle, you need courage (5)
I believe the answer is:
heart
'courage' is the definition.
(heart is a kind of courage)
'in the middle you need' is the wordplay.
'in the middle' means to look at the middle letters.
'you' becomes 'thee' (historical second person pronoun).
'need' becomes 'art' (I can't justify this - if you can you should believe this answer much more).
The centre of 'thee' is 'he'.
'he'+'art'='HEART'
Can you help me to learn more?
(Other definitions for heart that I've seen before include "Blood-pumping organ" , "Playing card - pity" , "Core - card" , "show enthusiasm" , "Not a club" .)