1. Start where you are, use what you have, and do what you can. For example: Walk through your house, up and down your stairs, or sit and stand in your chair for 1-10 minutes or do a combination of the 3.
2. Add to your daily diet before you subtract. For example: Add a vegetable or piece of fruit to every meal, even breakfast, these are the best supplements on the market. Both are nutrient dense, full of water and fiber, and will fill you up without lots of fat or calories.
3. You have time to exercise. 15 to 20 minutes of some sort of physical activity trumps doing nothing, no many how you look at it. You have the time. You just have to prioritize some of the time you have towards fitness.