well stop cubing for a bit.
seriously.
find another hobby. learn to juggle, learn to do card tricks, play Go or Chess or something, read some books, teach yourself a new subject, do some penspinning.
Then return to cubing. dont practice fridrich. start learning a different method, like a blockbuilding method, or intuitive method.
if you hit a brick wall, just leave it and do something else. when you return, in all likelihood it will have gone.
and remember, amateurs practice until they can get it right, pros practice until they cannot get it wrong.
that quote relates to music, but i think there's some truth in that for cubing also.
P.S dont leave cubing for too long
