Hey, for a start, go easy on yourself, changing is slow and painful, but you ARE changing, being on this site being just one manifestation of that change.
Secondly, personally, I would suggest you eat more raw food. For example, squeeze your own juice in the mornings, don't drink package stuff.
Eat a salad with each meal. We're not just talking vitamins here, though clearly theres a lot of them in fruit and veg, but clearly you're diet hasn't been the best in the past, and you will need those antioxidants and phytochemicals to recuperate.
Theres a link to a program which I have used in my signature, called . Its the only program i know of which will calculate your nutritional requirements SPECIFICALLY for you and your aims WHILST at the same time, it will use foods that YOU like. So, you tell it what you are aiming for, what your favourite foods are, and it will tell you what you need to eat.
Its pretty damn cool.
Ok, I hope this is some help to you,
Keep on keepin' on!