Nita, I'm kind of the same way, specifically at this time of year when the days are colder and shorter. I have a hard time calming myself down without the help of low dose Xanax (usually .25mg). As soon as the sun starts going down I can feel the anxiety creeping up, so it's almost like I have to teach my mind and body to NOT panic just because it's night time. This happens about every 2 to 3 years or so in the Fall/early Winter.
But yeah, with the help of a low dosage of Xanax and a LOT of prayer, I've always been able to snap out of it after awhile.
Hope you feel better soon!