in general i just move on and try again in a different way or maybe try something else ... i am still young i am making experience in life so i am cool with failure ! ..
as for my language study , about english i've been learning it since long ago so i don't lose it if i didn't practice but my mind gets really slow with it , about a new language if i didn't revise and practice regularly i lose everything i know about it .. and in this case this kind of failure make me doubt my abilities to accomplish my goals!
With humor!!