Ted Talk: How to Stay Calm When

How to Stay Calm When You Know You'll be Stressed: 

1. Remember that you are a human, so you'll make mistakes now or then. It's ok, and you can take actions to decrease the damage to the minimum. 

2. Have a prospective hindsight. That is, pre-think everything could go wrong and get prepared in advanced: 

I) Place things that easily get lost at a particular place. 

II) Take photos of important materials so you can find them or have replacement if you lost them. 

III) Estimate risks rationally, then decide whether to take them or not.