Really bad streak; how to change?

I do not see why not, it sounds like you have other things going on in your life that are hindering you from achieving your goals, you may want to try reducing any form of pre workout or caffeine intake, and if you drink green tea at all try taking it earlier in the day as i found i had the same problem after drinking coffee and tea too late at night was up till 3 -4 am wasnt fun on a night i planned on going in to the gym early the only way i could deal with it was falling asleep eventually and then going in and training and showing for the later class, some people are night people some people are day people changing to mornings has been a tough challenge. as I cant seem to maintain the earlier times. due to shared housing. and family commitments.

just wanted to share that my first thought after reading your post was that none of that food was particularly unhealthy--even the dark chocolate has some health benefits from what i've heard... my other thought was that you said something about being really strict with yourself or something to that effect, and while i think its good to push yourself, constant restriction will lead me to want to rebel and do something way less healthy than if i just gave myself the occasional "treat." anyway if it isn't productive for you to journal this slip i say don't do it, however, you might find out it wasn't as bad as you thought if you do journal it... anyway, no one is perfect so don't dwell on it... sleeping poorly and eating too much sugar sometimes lead to me eating worse, so my feeling is that these things may have been a factor, but sometimes it can be hard to say it was precisely this or that and sounds like this is a rarity for you so i wouldn't over analyse it and would just focus on getting back to doing what has been working for you...

Personally I would track but this is your journey.
Your first priority is to find out why you are having sleep issues and then what you need to do to fix it. You may need to see your doctor and have a sleep study done. I know if I don't sleep well I tend to Pac Man through the kitchen eating everything in sight.

MFP is a tool. It's only as effective as you make it.

If you need a break or its messing with you mentally- then by all means take a break but don't use that as an excuse. It's for you-- all that logging. No one else, regardless of whether your diary is open or closed. Logging helps keep your calories down and helps keep the food you put in your mouth a choice.

I track everything, even the not so pretty days. And there are some. Weightloss is a journey and as such you have to keep an eye on the BIG picture. Ups and downs are normal as are fluctuations in your bodies need for more or less calories. I actually aim to go over by 1-100 calories daily because I know the "under the calorie" status is unhealthy for me mentally. I want my focus to be on Food as Fuel and not about developing an unhealthy relationship with food. I have a window of about 250 calories that I aim to stay within and then make choices that fit.

Change requires a series of small changes until they become habit. I largely focus on increasing veggies and reducing my sugar. Those two things set a framework for my daily choices. I don't focus on guilt when I fail but on how I can strive towards my two goals tomorrow.

Stress and lack of sleep elevate your cortisol levels which in turn increase sleeping issues and can increase your urge to eat. Its a vicious cycle. I've had sleeping issues that lasted months and months and the best advice I can give you is don't feel stressed when you can't sleep. Just lay there and relax and get rest even though you cannot sleep. Getting stressed and watching the clock just aggrevate things. I have a fan that I can set at 30 minute intervals. I use that to track time without a clock. I turn it on for 30 minutes and if i cannot sleep I do another 30 minutes. More often than not I fall asleep within minutes of the first time it shuts off, my mind is waiting to the subtle sound of it turning off.