It's really so simple, just go out the door and get started. Within a block of brisk walking you'll begin to feel the difference. Picking up the pace your shoulders will start to move back your breathing will become easier and your thinking will be more positive. Try a little jog for about 30 seconds intervals then back to brisk walking. Look around as you walk and really see the neighborhood you live in. As a walker and not a driver it's a very different experience.
The hour will pass real quickly and you're done. Then some simple stretches to end your exercise for the day. If you have the time a short brisk walk after dinner will help digest your food and allow you to sleep better.
Keep it Simple, Consistent and Fun.