Waiting for the other shoe to drop

When you have a string of good days it can get kind of eerie. I literally have anxiety waiting for my anxiety to return. I'm so afraid of what situation I might have to face next. Will I have the right tools? Will I remember to use the tools? What if I freak out? What if I land right back where I was? It's can be really scary. I keep trying to stay present, be mindful, keep doing the work. I am connecting with all these other people struggling with BPD and it helps to know there's so many others out there going through stuff just like me. But when I feel so grounded and well, good, still there's a part of me that's just cynically waiting for the other shoe to drop. I wish I could shake this feeling. If you have any suggestions I would love some help. Thanks!