Don't worry, it's not "just you". For the last 2 months I've felt anxious most of the time. On about 3 occasions I've had week-long bouts of anxiety.
The good news is, you can get better I haven't yet, but I'm getting there.
I've found that exercise helps an awful lot, even if you have to force yourself to do it. The same goes for relaxation techniques, deep breathing and the like.
You might also want to check in with your Doctor, both to rule out any physiological cause and, possibly, to consider some medication.
I know it's horrible, but you can and will get through this - and be stronger for it.
Keep us posted on how you're doing.