Next time you get a cold - with its accompanying side effect inabilities to have you smell or taste foods - get through that cold, after its obligatory week or two, knowing the cold itself weaned you off all foods (other than chicken soup) basically, for four to five few days. We know nobody eats anything when suffering.
Result? Success! You've already begun the purge of poor "foods" with no effort, thanks to that nagging cold.
Then, when your senses of smell and taste return, get your sweet-sugar fix from fruits like strawberries, raspberries, or pineapple, and get your wide-ranging texture desires from foods like raw almonds or avocados - and get your taste buds satiated from foods that don't include words like: artificial flavor.
And begin your buoyant, healthy life - free from junk food.