I would take some heart from this suggestion (4)
I believe the answer is:
idea
'this suggestion' is the definition.
(I've seen this before)
'i would take some heart' is the wordplay.
'i would' becomes 'I'd'.
'take' becomes 'bear' (synonyms).
'some heart' says to take the centre.
The middle of 'bear' is 'ea'.
'id'+'ea'='IDEA'
'from' acts as a link.
(Other definitions for idea that I've seen before include "It comes to mind" , "Flash of inspiration?" , "Notion, belief" , "Plan" , "Suggestion" .)