This is excellent advice and the way you reacted to it @Flaribeau suggests to me that the real problem is your mindset.
I will just say quickly that if you took @IndiganDop's advice, I think you would be surprised at not only how quickly you'd start losing weight, but also how great you would feel. I know you feel that clinging on to the last "normal" foods in your diet is all that's keeping you going, but it's also what's keeping you feeling rubbish. Once you experience the improved feeling of wellbeing without all the carby crap, the desire to maintain that feeling will become a weapon in your armoury - and you need a full armoury because weightloss is hard.
However, what I think you need to do meantime is get some help with this. I think you need to go back to your GP, tell them what you've told us, have them check whether there's any medical reason preventing your weightloss (thyroid function, insulin resistance etc) but, crucially, have them refer you for weight loss support. Most areas have tier 2 and tier 3 weightloss support programmes, depending on how much you need to lose. You would get the discipline of weigh-ins, nutritional advice, psychological help, and the support of a coach and a group of others in the same situation.
Your palpable attitude of self-pity may be linked to the original weight gain as well as your inability to make progress at the moment. It's not a criticism. Many, many people struggle to lose weight, or having lost it struggle to keep it off, because most of us have mental baggage that sabotages us and makes us run back to the food cupboard under stress. Attitude adjustment is crucial, and most of us need help and support through that process. For most of us, the nutritional facts are not the hard bit.
The health scare might be a motivator, but as you're finding, it's not enough to see you through the toughness on a daily basis. Get some help, OP.