Sounds like good goals. You would want to break them down in measurable steps.
For example, you want to be able to walk 5 miles. Start with walking around in your neighborhood for a week or two, then increase the distance. As for food, you can buy healthier foods and eat appropriate sized portions.
Generally speaking, when doing goal-setting, one would need to break down in sub-goals or action steps. It works for me and it might work for you as well. Whatever works best for you.
