I hear you Copog and you are not alone. I started LT in October and was breezing through it 100% to the letter until my dad died. Then for 5 weeks I would start the day with LT and end it with shortbread, indian takeaway, popcorn or just anything that was in the cupboards (mostly shortbread =/ )
I knew I was sabotaging my efforts and I really wanted to stop but I just couldn't, the desire to eat, and to eat unhealthily, for comfort food, was so overwhelming I just gave into it. I knew what I was doing, I knew I'd have to wait longer to get to my goal as a result but at the time that food fix was just too powerful for me to ignore.
However, that said, I didn't give up hope that the day would come where things would click back into place and I'd regain my motivation and my willpower because, lets face it, the first week or two on LT is certainly not a walk in the park, its sheer determination that gets you through it until you're basquing in the bliss of ketosis.
Don't give up hope. Every day try to make the start, do your best, if you give in then it's not the end of the world, you'll get there. I think what I'm trying to say is sometimes you just have to give your body what it wants until it's ready to undergo the rigourous regimin LT puts it through.
Focus on your goals, get your reason for doing LT (your WHY) firmly implanted into the front of your mind, browse the before and after photos on the success thread in the main Minimins forum, do whatever it takes to start building up that determination again. You found it once and you WILL find it again.
Don't be hard on yourself, our food demons are extremely powerful and take a long time to overcome, if they didn't we wouldn't all be here and on LT battling them heh ~.^
Another tip I'd give you is keep coming to the forum, even if you're not on LT, read through the posts and gather inspiration from those who are succeeding and those who are struggling but battling on, determined to win the fight and before long you'll find yourself back into the routine of LT, or whatever diet you decide to choose to lose the excess weight.
Best of luck to you, it's certainly not easy but the rewards are so worth it. You'll get your focus back I'm sure of it, in the meantime don't beat yourself up over it instead make a promise to yourself that you will do your very best each and every day.
*hugs*