I know how you feel too. I have a food journal and track everything I eat. To maintain I need to eat about 1200 calories a day, to loose I need to be eating between 800 and 1000 daily. The problem with "exercise" is that it just doesn't work.

Several years back I accompanied my son and his Scout Troop on a 30 mile backpacking trip through the Grand Canyon and gained 5 pounds because everyone insisted I eat at least 1500 calories a day on the trail. The other leaders were consuming about 2400 calories and day and probably lost weight on the trip, but not me!

I carried a 50 pound pack while hiking in extreme conditions for 5 days eating only 1500 calories a day and still gained weight. It's so frustrating!