Sounds like your diabetic woes are fuelling anxiety and depression which is then making it difficult to manage your diabetes, a vicious circle which is hard to break.
Asking for help may be hard, but it's the right thing to do, and the first step to getting back on track, and into a virtuous circle where your anxiety/depression diminishes and your blood sugars improve.
Many (most?) of us have had periods where are diabetic control has been on the back burner/ less than ideal/ out of control (take your pick, I certainly have) which then tends to make us feel guilty/depressed (oh, the complications, it's all my fault etc etc). Sometimes you have to be kinder to yourself, recognise that you can't be perfect all the time (or even some of the time?), but usually (with blood sugars anyway), you can improve things.
Are your panic attacks about poor control possibly leading to complications, or are they about hypos? (Or both?). Can you contact your clinic for advice on basal rates (usually the first thing to look at if your sugars are out of wack), or are you confident to do it all on your own? (As a T1 since 1970 I'm still receiving occasional help from my clinic, though I do mostly adjust my insulins on my own.) It's good that you're getting counselling, but I can well believe that they may not understand about diabetes (I've often thought that all diabetic specialists who advocate ultra low blood sugars should be forced to experience a hypo just so they know how awful it makes you feel), and if you're seeing a general counsellor rather than a specialist diabetic one (are there any specialist diabetic ones?) they may well not understand much about diabetes.
I'm relatively new to these forums so I don't remember you from before, but I'm sure there'll be some help coming when the UK gets back into action for the day. Good luck, sending you some virtual hugs.