I agree on the lifestyle adjustments. I have given up starchy veggies, grains and flour projects, any kind of "sweetener" (natural or chemical), caffeine, alcohol and pretty much any packaged, processed food. I decided to completely clean up my act and am only consuming low-glycemic veggies, meat and poultry, eggs, limited dairy products and a bit of whole fruits -- real, lower-carb, natural foods.
My rewards for these lifestyle changes have been stellar: lower mean blood glucose while using less insulin, fewer blood glucose swings (high or low), slow and steady weight (fat) loss, less blurry vision, better sleep, more energy, feeling 100% better in general and (I hope) fewer complications down the road.
That said, I've abused my body a lot over the years. While I would never enable someone to continue abusing their body, I also won't judge them for not being ready to step up and clean up. That would be pretty hypocritical of me. I just hope that people will look honestly at what they're doing to themselves and try their best to do better, whether we're talking about drinking too much coffee, eating too many chips, or smoking too much pot.