sugar isn't really an addictive drug and shouldn't be compared to nicotine, alcohol, meth, etc.

Even if food can function as a reward and lead to compulsive behaviors, you can't live without food, and eating food (even sugary foods) doesn't lead to addiction the way we think nicotine does.

So, yeah - incorporate healthier diet and all that, but know that as long as you're not eating too much sugar it's actually fine in moderation.