Task paralysis going on 2 months and everything's getting worse bc I CAN'T make myself tackle essentials

Management of bills; Completing/submitting online forms that can either positively (or adversely if they don't get done) affect my livelihood; Making phone calls that SHOULD be simple & straightforward, ie: calling credit card company customer service to request an extension on my card's initial APR before the rate jumps to 29%, etc. etc. The examples above, amongst other things like basic self care, have been IMPOSSIBLE for me to tackle for nearly two months straight. The real fuckery is- despite KNOWING that waiting/avoiding handling these tasks is only making my life MORE DIFFICULT, I STILL cannot get "unfrozen". Talking to my psychiatrist would be a waste of time...and besides, that's yet ANOTHER bill I'm WAY behind on. Please tell me if you've been through this and somehow conquered it, even if temporarily. As info- C-PTSD as well, and neither ADHD nor PTSD are new diagnoses for me. Just seems that my symptoms are worsening with age, definitely NOT improving. (Am I fucked?? It sure feels like I am.)