I can't cope with revision!

Help, I am currently in year 11 revising for my GCSE's and can no longer cope, what worked for you?

Music - having revision music specifically set aside to only listen to when you are working is great
Cramming - summarising everything in a textbook down to 2 sides of A4 is less time consuming, less boring, and more engaging than writing pages of notes.
group study sessions are also great.
past papers for when you just dont want to make notes anymore.

sometimes just taking a week off work gives you the energy to continue again.