Oh I know, but repurposing the word diet to mean blanket change is what sets you up for failure. When you realize that you can focus on incremental change and really see benefits.
Another example I give is how long you have been eating your diet and you suddenly want to change it. Compare that to riding a bike. It probably took 2-3 years for you to become good at riding so much so that now it comes second nature after 10, 20, or 30 years. Apply that mentality to changing your diet and you will have much more success. Sometimes you fall off. You cry a bit, you dust yourself off, you get back on.