How can I fix this

Most of the time, my fridge is empty and you can't even find a single thing to eat in my house. When I have the chance to get food I always buy a large amount just for that one day because I know there wont be anything home. But sometimes depression and social anxiety takes over so I chose to stay home, with no food. Then it keeps repeating: Nothing to eat - Purchase junk - Binge Eat - Repeat. I want to end this cycle but I really don't think there is a way out.