Apply abstract mental labels: Associating foods with abstract ideas like: “energy crash” or “longevity” or “gum disease prevention” has been shown to help you resist temptation and opt for healthier choices. (I believe) it is the abstract nature of the thought that helps you improve your choices because you are NOT focusing on the taste, but on your health goals.

To make it even easier for you, decide in advance on whole categories of foods; that sugar or pastry isn't "tasty", it is an"energy crash". Everything in the cabbage family is "longevity"; crunchy chewy veggies like some lettuces and celery are "bad breath fighters", and healthy fats are "wonderful treats".

Of course, as I've said in a past hint, once you choose, DO focus closely on the intrinsic characteristics of the food -- texture, flavor....