What I wouldn't give to feel like myself again

My anxiety subsided and was all but gone and I was feeling great until a couple of weeks ago. Then I started stressing over what I needed to get done for the holidays, budgeting for it, working on year end stuff at work. For whatever reason, this bout of amped anxiety has kicked my butt. I'm tired most of the time no matter how much I've slept, body is tense and sore, I've had off and on tension headaches and random tingling all over. The worst of it is feeling like I'm in a fog so having a hard time concentrating. Does anyone else feel this way or feel like when you're doing well and anxiety starts again, it's worse than before? I just want to feel like me and alive again.