Student or Learner
--I'm going to join the army. I really don't want to leave my good friends.
A. Tomorrow is another day
B. All things are difficult before they are easy
C. All good things must come to an end
D. All is well that ends well
Which one sounds natural? If none of them fits, what will a native speaker respond to this situation?
C is the only one I can really see fitting at all but my opinion is that none of them stands out particularly. If the person has spent a very happy period of time with those good friends then it would not be unreasonable to say C.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.