How to deal when you freeze up

I'm new here and getting a bit frustrated with the way things work on here, but here I go. I have severe driving anxiety. It is the worst when there's rain, snow, ice, or high winds, or any traffic. I also get a lot of anxiety over driving somewhere I've never been (less so if it's like out in the country or something) so pretty much unless it's a familiar drive and the weather is nice, I get anxiety.
I didn't get my license until I was 22, I turn 34 next week. I have been recommended breathing exercises, noticing my surroundings, and things like that but they don't help me when it's really bad. I also have a major phone anxiety, like making or receiving calls, especially in larger volumes, but even for my own appointments and things. These things don't work for that.
Sometimes I freeze up so badly my mind is blank and I can't do anything. If it's when I'm driving I grip the steering wheel and have to just try to get home. If it starts pouring or something, I can't even make myself go into a different lane to get over or anything. If I'm at home and it's anxiety about other things, I can't make myself do them sometimes. Sometimes that means I have to distract myself from the anxiety by doing something like playing a game on my phone or computer, or even just laying down for a while.
My husband is getting frustrated with me over this because it does affect my ability to get some jobs. I had to quit my dog grooming career because of severe back pain and I'm very limited on what I can physically do, so that already cuts out a lot of jobs. My anxiety then eliminates a lot more. I've applied to a whole lot of jobs but haven't gotten much of anything. (some online work here and there) I just don't know what to do anymore and feel lost.