This seems like an objective article on sugar addiction : https://articles.mercola.com/sugar-addiction.aspx
"around 75% of packaged foods sold in supermarkets contain added sugar."
For a start, trying to always prepare your own meals from raw products. Use raw vegies and meat. Make your own sauces. Make your own desserts.
Don't eat takeaways.
Not only will this dramatically reduce sugar intake, you'll be doing something wholesome while not eating sugar. That's a good habit to have to counter the habit of indulging.
Sometimes, of course, someone else will have prepared the meal. I think just be gracious and accept that. An occasional unintentional consumption is ok. Just be aware of it. Bringing a mindful awareness into whatever one is doing is a good idea.