It isn't necessary to say this, but dieting is difficult. Writing about it seems to be helping me deal with the struggle. If you're interested in my thought process please keep reading. Maybe it will somehow help you with your struggle.
How did I do it the last time? I think I was successful because I kept convincing myself that I was changing my style of eating rather than dieting. I was also extremely motivated because of pictures I had seen from a friend's wedding. I looked really, really heavy. I remember I had to buy a size 18 dress and then on top of that, I wore a slimming undergarment to make myself look better. A girlfriend commented later on the day of the wedding when she helped me off with the corset that it was really, really tight.
She was right. And the pictures, while they were beautiful, did not reveal the image I had of myself in my head. Up until I saw those photos, I believed I was carrying me weight well and convinced myself that there was no problem. Even though my size 18 clothing were starting to shrink. At the doctor's visit that followed the wedding, my GP told me that I was obese and that I should lose weight. He recommended my nutritionist and after meeting with her I dived into my new healthy eating plan head first. After six months, I noticed that my feet and back felt better and there was no more heartburn, which I discovered is triggered by fatty foods (in me).
My body was telling me all along through aches, pains and heartburn that I was hurting myself by maintaining an unhealthy weight. And I didn't realize it until after.