When it’s your turn to play your shot, take total command of your surroundings. You should not be afraid or feel uncomfortable asking people to step out of your line, be quiet or show respect. I’ve seen many golfers play a shot and then turn around and look at their opponents as if they were the cause of a bad shot. If you fail to take control of your surroundings, the mistakes you make are your own.
I feel as if the course is a stage, and I’m the center of attention with total command. Try doing this, and you will start to gain more confidence in yourself and your ability to manage your environment.