There is good advice here. Deep breathing, music, talking to the flight attendants. Maybe if you mention that you're a frightened flyer when you board, the pilots will bring you up front and talk to you a bit. Who are you flying on? What kind of airplane?
Remember that flying is much safer than driving. When you hear about an airliner crash, it's only news because it happens so rarely! Turbulence is uncomfortable, but planes are built to withstand it.
I'm an airline pilot, and one of our captains here has a degree in psychology. He put out a kit for fearful flyers. http://www.fearless-flight.com/chick...rful-flyer.php
I've never seen the program, but one day I was flying with him, and a lady on board mentioned how helpful it had been for her!
Maybe something like that would help next time, although I realize it's too late for it now if you're leaving Monday.
Good luck, don't worry, and have a great time!
Sue