Soon I will have examination and I am very nervous about it. I recall all of my previous examinations and all the time I had the same problem. The closer my turn to answer comes, the more my fingers tremble and thinking abilities disappear. All this may lead to failure. I have tried demulcents of different kinds, but I either feel sleepy or my brain works worse than usually and I cannot concentrate on task. So I have an idea of inventing medicine for calming one's nerves. It must have only one effect - "switching off" your nerves and nothing else! Not making you sleepy or dumb. You will remain calm, sober-minded and precise, just like you usually are. I wish this medicine can be invented ASAP, till my exams start!