I had hit a sticking point in 2012. I did several things. Started tracking with cals and macros with online site and food scale, added a additional 20 min. cardio routine into my existing workout plan and changed my supplementation to consistently include healthy fats. Which one pushed me through, who knows. It worked. Of course I came to this plan by trying each one individually and none working by themselves alone. I've had friends that only needed to make a minor adjustment where others have had to stop and reset then start again and things started again. I like all the ideas in this thread and hopefully one or all of the suggestions will work in your situation.