Play to have fun and enjoy the people around you. Try to become free from tension and become target aware. Check your alignment, point your club face at the target and make sure your feet are parallel to the left. Always think of the positive. Forget the past and focus on your next shot.
Bad swings are a part of golf.
Do your best to recover. Don't expect so much from yourself and don't try to fix your swing. Seriously, play the game and enjoy each other's company. You've got four hours of quality time together without distractions. It is a great escape from everything else going on, so enjoy your time with each other.