Standing in front of a couple groups of people can be very scary and most golfers will dread that feeling. Most will feel very scared and will end up hitting a very bad shot. However, there is one thing that can guarantee that you will be able to get the ball airborne and into the fairway with ease.
Your setup is arguably the most important thing because it will be impossible for you to put on a good swing without a good setup. You can find a quick rundown here. Make sure that your head, feet, hips, shoulders and club face are all aligned correctly so that you can swing on the right path.
This is the muscle that needs the most exercise. Before you tee off, you need to visualize a nice shot that will fly right down the middle. I want you to truly see the ball coming off the club face perfectly and then make sure that you will give it all that you have mentally.
Golf is a game controlled by the mind and so you cannot let your brain down. Once your brain starts to think negatively, you will definitely start to mess up as well and your game is done.