Actually, I have heard that some professionals actually consider food addiction as a true disease, same as a drug/alcohol addiction. I don't know how many people really believe or stand behind that idea. I think that you may benefit from finding someone who can help counsel you and support you in learning in how to overcome your issues with food. Try a dietician or nutritionist. You said you eat a rather bland diet, why is that? Do you feel that healthy food must be bland? Not true at all, if that is the case. If you really want to conquer this it will take very hard work and dedication on your part, at least in the beginning.
Make sure first of all that you are eating properly during the earlier part of the day to ward of hunger later on. Make sure you eat small meals/snacks every 3-4 hours with whole grains and protein to keep you from feeling hungry again right away and to help keep your blood sugars on an even keel.
My personal suggestion is that you begin to adapt a clean eating lifestyle, meaning you eat minimally processed foods. No artificial junk, whole grains instead of refined white flour/sugar, lean meats and plenty of fresh fruits and veggies. Also watch what you drink, stay away from sodas, sweetened teas and drinks.
Use your will power, stay away from drive thrus and even go so far as to throw away the take away menus if they give you temptation. I know the PCOS makes this even harder, but you can lose weight with proper diet and exercise. I don't know you but I believe in you anyway. I could go and on and on but I will cut off and wish you luck. If you have any other questions just ask, I am sure plenty of other posters will add on to your thread as well.