Driving Anxiety

About fours years ago I was driving back home from out of town. Taking the interstate of course, the weather was sunny and I got an early start. Now about 3 hours into my drive back home, it began to rain( but not heavy rain). So by that time I am nervous because slippery roads and speeding just isn't something that I am comfortable with. Now, I am getting into the slow lane, when I get surrounded on all four sides by big ass semi truck's. Their wheels are causing thick white mists to develop all around my car ! making it impossible for me to see where I am going. And to make matters worse they are honking at me ! randomly. This went on for I swear the longest 15 mins of my entire life. The whole situation to say the least was fucking emotionally damaging and has cracked my confidence in driving by myself at all, and on the open road. Does anyone else have this problem or any advice on how to completely move past this ?