I tend to tackle such issues head-on as opposed to trying to self-soothe. I think it stems from having BPD tendencies, and then learning to adapt to those tendencies. Since I suck as self-soothing, anyway, I find it more strategic to just throw-down with my emotions and get to the bottom of things. If I were in your shoes, I'd be doing a lot of thinking and self-talk on why I have such a hard time with uncertainty, reminding myself that I've been through worse and I can handle whatever is coming.