don't cry before you are hurt
Don't become upset about something until it actually happens. I know you're worried that you did poorly on your exams, but don't cry before you are hurt.
Don't cry before you are hurt.
Prov. Do not be upset about a bad thing that might happen; only be upset when something bad really does happen. Fred: What am I going to do? There's a possibility that my job will be eliminated! Jane: Don't cry before you are hurt. They haven't eliminated you yet.