My anxiety was so severe last winter, and I was having depression too, I never thought I'd feel "normal" again. My work situation was so stressful that I'd get flashes of fear and feel "frozen" just trying to lay out my work clothes the night before. Daily free floating anxiety, the whole bit.
I'm fortunate to say I feel "normal" again, so yes, you can certainly go through severe anxiety and feel like a normal person again. I won't say I'm symptom free. Recent fatigue and some financial stressors have given me some anxiety, but it's not all day, it's not even every day. I don't have the "disordered thinking" that I did this winter.
So yes, there is hope :) Just realize that it is frequently a slow process. My improvements can in bits and increments, not in leaps, even after starting a new job that was much better for my mental health. It takes time.