Okay so you are crying because of the pressure you feel due to GCSEs, what about when you get to A Level and you start applying to unis how are you going to manage the pressure if you want to get into a good uni??!!
Just don't worry about others, why should you if they do well then good for them. You should just try to do your best and enjoy the holidays, go out, go to festivals, go to the cinema, meet up with friends... this way you will forget that GCSEs even exist!! It worked for me hahahah I always forget about how I may fail A Levels until I get home...
Have a great summer!! =D