I think starting by not buying packaging of foods unless its labeled "certified organic" or you get to know the labels. Additive Alert and Failsafe can help as a strict guideline.

When we did the elimination diets, we went off all milk and dairy and soy products as well, so it was a bit more extreme.

Our diet became a lot more healthy, but it did take a few minutes longer to prepare. I find it can be cheaper and more exciting to make it yourself.

We do heaps of stir frys, meat & 3 veg, bolognaise, shepherds pie, sausages and mash, etc etc etc... there are heaps of alternatives to packages, you just have to get to know what flavours you like and how to cook it