So when I started drinking Shakeology I did some research into some of the ingredients that were in it and how they would benefit me and allow my body to perform better. That led to more and more education of how food can either help or hinder our bodies from performing at its highest level. I can't imagine going back to eating the stuff I used to in the quantity that I used to. Key there is quantity, I still enjoy pizza, french fries, and cheeseburgers, they just aren't the norm anymore, and I'm ok with that. I've found greater satisfaction in feeling fantastic and losing weight than in the temporary satisfaction you get from eating food that isn't the best for you. This mindset change didn't happen overnight. I just kept adding in the good stuff so that eventually a lot of the not so healthy stuff got pushed out.
There are a lot of things that I have cut out of my diet completely or at least on a very rare occasion. A couple things would be anything with high fructose corn syrup, boxed dinners or prepackaged meals, and soda. I started learning how to read food labels and pay attention to not just calorie levels but also protein, sugar, carbs and ingredients!
What I suggest you do, is learn through experimentation. There are some basics that I think would apply to any diet/lifestyle out there: add more veggies, drink more water, limit your added sugar and cut out processed foods. If you did these things, your energy levels would go up and you would most likely lose a little weight, if you have some to lose. After you do that, you can try playing around with different quantities of grains, fats, proteins. Try some supplements and see if they make you feel better or worse.
There is no proven formally that works for everyone....it's a constant moving target so just dive in and have fun!!!