Breaking step, I again go outside for a rest (7)
I believe the answer is:
respite
'for a rest' is the definition.
('respite' can be a synonym of 'rest')
'breaking step i again go outside' is the wordplay.
'breaking' indicates anagramming the letters.
'again go' becomes 're' (I can't explain this - if you can you should give a lot more credence to this answer).
'outside' is an insertion indicator (some letters go outside others).
'step'+'i'='stepi'
'stepi' is an anagram of 'espit'.
'espit' put into 're' is 'RESPITE'.
Can you help me to learn more?
(Other definitions for respite that I've seen before include "Short let-up" , "Short period of rest" , "See trip (anag.)" , "A lull" , "Period of temporary relief" .)