I finally enrolled in a boot-camp style workout program. They had a "cleanse" week where we couldn't have anything with flour, dairy, alcohol, sugar, carbonation... it was a big long list of stuff, but bottom line was that for that week, I pretty much ate vegan and with no white carbs. It was a rough week, let me tell you! Anyway, then for the rest of the 6-week program, we could add in one ingredient per week (like the first week, add dairy back in, then the next week, lean meats, and so on, but never adding the white carbs back in, or if so, very sparingly). Anyway, at the end of the 6 week program, I had lost 7 inches and 15 pounds. I had (unrelated and elective) surgery immediately thereafter, but the amount of muscle I had gained during boot camp allowed me to keep losing weight even though I haven't been able to work out for 3 weeks.
If it is at all within the realm of possibility for you, sign up for a fitness boot camp, and try to cut out the stuff that might be making you hold onto the weight. Even if you can't cut down on *all* of the various categories at once, try to cut back one thing at a time and see if you notice any changes in your body.