Break down and do all this again (7)
I believe the answer is:
resolve
'break down' is the definition.
(thesaurus)
'do all this again' is the wordplay.
I cannot quite see how this works, but
'again' could be 're' and 're' is present in the answer.
The remaining letters 'solve' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
'and' is the link.
Can you help me to learn more?
(Other definitions for resolve that I've seen before include "12 [STIFF UPPER LIP]" , "Determine firmly" , "Settle; determination" , "work out" , "Willpower" .)