In the mean time, find something else to do! Walk, volunteer, go to the library, the gym, take a walk, offer to walk dogs for your neighbors, take a walk, shovel snow, baby sit, take a walk, clean closets, take a walk, offer to run errands for neighbors and friends, take walk, shampoo carpet, take walk, organize the cupboards, or what ever. Just because you do not have a job and you are not currently in the situation you would prefer, does not mean you should sit at home on the sofa inhaling junk food!
I'm not trying to be mean, but you have options. While at this point in time the purchasing of certain foods might not be an option, you do have the option of what you do with your time. And you have the option of portion control.
Not every day or every week, or every situation will be perfect for what you want, some days, you have to suck it up and put on your big girl panties and do the best with what life has tossed at you!