Start over...AGAIN

I need to lose 75 pounds. Last year didn't do much but yo-yo. When I did lose, I found limiting carbs worked well for me as opposed to watching fats. MFP is the best site to record day by day that I have ever found. I am 76 years old this year and have some challenges to deal with. Lots of pain in back from arthritis. I don't sleep any more than 2-hr increments during the night and eating in the middle of the night soothes me so is a bad habit. I hate taking prescriptions so I don't and surgery is out of the question for me. Therefore exercise is practically nil. I march around the grocery store and run errands and that's about all I can handle. On a positive note, doubt I will ever quit trying to lose weight and am always looking for something new to motivate me. Thanks for listening. Your success will be wonderfully inspiring so the best of success to us all.