Just starting this journey! Fatty liver be gone!

I am just starting this weight loss journey and I know it won't be easy. I'm overweight because I had given up on myself. I suffer with chronic pain. Fibromyalgia and rheumatoid arthritis. Degenerative disc disease. Also I I have Hashimotos due to hypothyroidism, PCOS, insulin resistance and more. My main concern right now is that I have been diagnosed with NASH. You can look it up but it's non alcoholic fatty liver. I'm so scared and need to lose this weight and keep it off. It's going to be a lifestyle change. I have to do this no matter how hard. I'm here because I definitely need the support.