I know the struggles. I had the same situation 2 years ago around the same time of year. I was working all through the Easter holiday as a delivery driver and couldn’t say ‘thank you’ when I got a tip. I’d beat myself up for it when I was driving back to the shop and had thoughts about yanking the steering wheel on country roads. Opened up to my boss about it and it really helped me out. I’m not sure if you’re close with your boss or if they are approachable but it may help you out. It’s also not helping that you’re getting stressed by it, it’s just causing a knock on effect. I know it’s difficult, but try push aside the fact that you’ve been struggling and put on some pretend confidence. It will hopefully start rubbing off on you and you’ll get back into the swing of things. Hope you get out of your rut soon, take care