Good Morning melodee,
I've experienced anticipatory anxiety so many times over the years and it's caused me way too much stress, unease, frustration, and melancholy. And as with most everything with which we deal, there's no "miracle-cure." However, if you truly want to kiss it good-bye there are strategies that can help you pull it off.
It’s only natural to want to avoid the things that make you anxious. But the only way to get over anticipatory anxiety is to go toward what’s making you fearful rather than backing away.
Picturing positive outcomes can significantly reduce apprehension, which can lead to increased levels of confidence and an overall elevation in mood.
When you find yourself wondering, "What if..." Stop! Take a deep breath; breathe in through the nose, hold the air in your lungs for a count of four, then slowly let the air out through the mouth. While you are doing this, consider the possibility that you are being unrealistic and irrational. Focus on positive or neutral outcomes.
I hope this helps you in some small way and I am here for you.