You make sure to have some good enough options that you like easily available. To some people a trip to the gym will be great stress relief. If going to the gym feels like an insurmountable obstacle, have a list of some workouts that you can do from home. Having some meals that you have cooked and frozen makes an easy option. Having ingredients on hand for a simple meal makes it easier. If you want pizza, keep a pizza on hand, but perhaps a single serving pizza instead of a giant one and have a box or mix of frozen vegetables right with it. Heat and eat. You have other coping and relaxing mechanisms available.
-google first. ask questions later.