The advice so far sounds about right to me....
I think if we let ourselves learn to eat foods in their more natural, less processed, state, we will come to see how delicious they are. I still bake (often with my daughter--fun to do it together!): we use whole wheat flour, unsweetened applesauce, ff yogurt, grapeseed oil, etc. We still use some butter and oocasionally a bit of white sugar. All in all, we've reduced the fat/sugar content of our recipes and we still make delicious things--pumpkin muffins, chocolate cake, banana-nut loaf, oatmeal cookies, etc.
The mirror of the heart must be polished daily.