Liebe -- I was also planning to "correct" the language in your last post! It can't be as simple as failure, way too harsh of a term. Cooking potatoes for your family is a huge temptation; if someone left a hot bowl of mashed potatoes in front of me with a salt shaker and a stick of butter within reach...hoo boy, gimme a big spoon and leave me alone!
Carbs are complicated; we need them to survive. Potatoes are healthier than candy. Cooking for others is hard. Over-sampling is better than bingeing. Trying to change is better than giving up. "Failure" is relative!
Keep making better choices, and you'll actually be succeeding...