P7 final revesion

hello guyys. i have prepared p7 last month till now . self study. i was failed p7 in december i was dissapointed and so decided to not to resit in march exams. i have one paper more that is p3 i will attempt p3 in september. all my papers are pass . i have to styddy just p7 now guyys please give me some tips to make final revesion of p7 . as there are only few days left. i am very depressed and i am not confident yet. guys whom cleared their p7 in latest attempts please tell me.