PollyWolly,
you have had success losing weight so focus on positives instead of negatives. I know that's easy to say but can be hard to do, but look how far you've come already. Having food addiction does make this process a little harder (I too have an addiction to sugar which is not allowed post gastric bypass) but we need to remember why we are doing this. We want a better/healthy life and hopefully not be disabled any longer (I have severe arthritis and need knee and hip replacements so understand not being able to exercise enough). There is a happier life ahead for you. Turn to God when you are struggling (I have and will continue to look toward the Lord for support), it really does help.
Good Luck