You can also try to explain to yourself the concepts in your own words and try to explain it to other people I have found that to work for me.

Senseless riding and memorizing is the simplest way to waste your time completely since it's not actual learning but just mindless memorization that you are going to forget as soon as you type it into your exam.

The best advice I can give you is to relax, let things flow, have fun while studying and everything will be better.

Thanks for posting these pieces of advice, they are really helpful to students in stress.