It's often faced with resolution (3,4)
I believe the answer is:
new year
'resolution' is the definition.
Both the definition and answer are singular nouns.
Maybe there's an association between them I don't understand?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for new year that I've seen before include "Time for resolutions?" , "Time of Epiphany" , "It's a week after Christmas" , "eg 2002" , "different diary now?" .)