It really depends on so many factors, much of it not related to writing too. I might cry, like I did last week, or usually just mope and throw a pity party. After a few days, I try to get it out again, but I definitely can't write for a few days after any rejection, because I feel so worthless.

And it doesn't get easier with time. In fact, in my case, it's getting worse as time goes by.