OK, first BREATHE.
Then realize it is only your thoughts that are doing this to you, it is not reality.
Then, when you have done that, you realize it is YOU who is scaring YOU.
And once you realize that, you change your thoughts, concentrate and change your thoughts to what you really want, because only what you think is real....make sure you have the right thoughts to get what you want.
YOU create reality with your thoughts.
BE POSITIVE, ALWAYS. Good luck.