As Tom pointed out in post
#3 , you already have shown a measure of success. I can add that just being a survivor of a horrific accident puts you in the success camp. As one who spent considerable time and effort in my attempt to quit smoking, my eventual success was due to shear persistence. No matter how many times I failed, I stayed with it.
On losing weight, you are on the right road and should be glad of that accomplishment. I've been cutting out sugar from my diet wherever it can be found and this has made a difference in getting rid of inches off the middle. The tricky part is that sugar is added to everything that comes in a package. Shop the perimeter of food stores where the real food is. The stocked shelves have noting good.