Being a Best Man isn’t easy, but neither is being the groom. Don’t just think about how you are feeling, but how he is doing too. Find out if there is anything he needs to help him stay calm for the ceremony… perhaps taking him for a stiff drink beforehand. Make sure that he has eaten, and if needed, give his tie a straighten too!
The key is to remember that there is a reason why you were asked to be the Best Man. So be the Best Man that you can be!