I don't care what people say or how brave a face they put on it, receiving a rejection is akin to a full body flay of tiny nicks from and exploding paper mill. Paper cuts hurt, so do rejections and all the sage advice in the world--don't give up, sub to another house, start a new ms, take solace from the many thousands who have suffered likewise--isn't worth a damn whilst the cut is still smarting.
I know, I received one and I very much pretended to be brave whilst privately wishing I'd booked a bed at the local ER. God it hurt--for days!
Only thing that made me feel better was receiving a request for a full at the end of the same week...so maybe the sage advice isn't totally wasted, sub far and wide, because publishing is subjective and if the force be with you--luck by any other name--you will get a break...eventually.
My moment of sagacity
Rejection = Pain
Pain = Heart (you need a heart because without one, you're a sociopath)
Painkillers (balls + bloody mindedness) = Relief (maybe)
Relief = Bad hangover!
Bad Hangover = Hair of the Dog (get back to writing)
Hard Men the Hard Way