To try something new was depressing? No, oddly (6,4,5)
I believe the answer is:
spread ones wings
'to try something new' is the definition.
(I've seen this before)
'was depressing? no oddly' is the wordplay.
'oddly' indicates an anagram (letters in an odd order).
'was'+'depressing'+'no'='wasdepressingno'
'wasdepressingno' is an anagram of 'SPREAD ONES WINGS'.
(Other definitions for spread ones wings that I've seen before include "Try something new" , "Develop abilities fully" , "make full use of one's talents" , "as a high-flyer would?" .)