I Have Anxiety

I've been having panic attacks about doing my taxes (due April 30th here in Canada). I shouldn't be worried about this, my income last year was less than the year before so I should have less taxes to pay (I'm self employed). All I have to do is get the numbers (income, expenses, etc) and take it to an accountant and they'll figure it out. But just the thought of logging to my bank account and crunching all those numbers, adding the income/expenses for every month, is giving me a panic attack (I'm hyperventilating right now just thinking about it). Forms, financial and government stuff give me anxiety (perhaps is part of my social anxiety, fear of being judged -- and screwed up -- by some anonymous, random authority). I have some anxiety pills that my doctor prescribed me early last year "in case my anxiety got really bad", Lorazepam, but he warned these can be addictive and I should be careful with them. So I've never taken them to this day. I'm thinking I perhaps should take them now, but the very thought that they might make things worse (I may end addicted, and besides the side effects include getting "sleepy" so I may end up unable to function, worse than now) is in itself making me anxious. I have no idea what to do other than wait for the anxiety to magically "end".
😭