don't cry before you are hurt

Don't cry (out) before you are hurt. (Do not be upset about a bad thing that might happen; only be upset when something bad really does happen.) — не реви раньше времени (возможно, все еще обойдется)

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. (CIDI)