Anxious about anxiety - need help

In January, I experienced true anxiety and depression for the first time and it was in all honesty the scariest thing I've ever experienced. I got better, but only for a month. About a month ago, I started feeling anxious about transitioning to high school, finals/final projects, college, and my career. I was depressed too, but a lot less than January. Now, my anxiety about what I mentioned has improved, but I’m feeling anxious about having anxiety, if that makes sense. I’m really scared that I’ll get as depressed as I was in January because anxiety and depression come hand in hand for me. How can I reduce my anxiety? And not get scared in the future when I get anxious?