If your mind wanders a lot, then don't set a book of goals that you suddenly want to accomplish. Pick one to three actionable things to work on and keep those posted where you can see them. Something as simple as a piece of paper on your fridge with two columns of seven boxes (so that you can check off each goal as you accomplish it this week) and one serving of fruit written by one column and walk five minutes by the other column (or walk time and servings of fruit so you can fill in numbers each day) works wonders. I'd also recommend posting a list of cheap and easy options as you find them. One column for breakfasts, one for lunches, one for snacks and one for dinners. Deciding is often the hardest part for me, so if I have a list that has the work I have already done and can just pick from that, well, it makes life a lot easier.
-google first. ask questions later.