Hi and welcome to Psych Central! I think many of us have anxiety about relapse. All we can do is take our meds, try to eat and sleep well, avoid lots of stress, see our doctors and therapists, and try to enjoy each day as it comes the best we can.
Keep as busy as you can without too much stress and take pleasure in what happens. I have two vacations scheduled for this summer, and I sometimes worry I won't be up to taking them, but I try to watch good TV shows, get involved in projects, read enjoyable books, etc.
I even have anxiety about having anxiety, since I've been decreasing my Klonopin. Oh, well. (I have GAD and bipolar.)
Let's survive!