Due out and I travel in it alone (7)
I believe the answer is:
unaided
'alone' is the definition.
(I've seen this in another clue)
'due out and i travel in it' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'travel' is an anagram indicator (I've seen 'travels' mean this).
'in it' is an insertion indicator.
'and'+'i'='andi'
'andi' with letters rearranged gives 'naid'.
'due' with letters rearranged gives 'ued'.
'ued' going around 'naid' is 'UNAIDED'.
(Other definitions for unaided that I've seen before include "Dun aide being without help" , "Without help or support" , "having received zero help" , "Done by oneself alone" , "Quite without assistance" .)