Have somebody hide the snacks for you and whenever you feel a craving, brush your teeth and drink a huge glass of ice water. It kills the cravings right away, for me at least.

drink water to satisfy your cravings. 

Brush your teeth right after dinner; this will help resist your temptation for a late night snack because you'll be too lazy to re-brush. 

Try to regulate your schedule--set mealtimes at the same time, have a designated bedtime, brush your teeth, and then go to bed.  The later you stay up, the more tempted you'll be (speaking from personal experience this summer).  I've also been told to chew a 0 calorie gum, which really does seem to work as well.

Eat slower. Smaller, but more frequent meals (every 2-3 hours). Walk more places instead of driving. Or bike! I love biking lol Take the stairs instead of the elevator or escalator... Fiber is filling. I think studies have shown that higher fiber diets induce fat loss and lower cholesterol too :) that's all i got for now.

Eat a lollipop. It keeps you occupied when you are doing something so you don't go grap something from the cupboard to eat.

just sleep early.

You identify as a "chubby" person, meaning your programming (aka conditioning) is one of a chubby person. In order to get and keep the weight off you must change your programming, and see yourself as slim long before the scales show you as slim. The brain directs everything we do, including our weight. Read a great book called "Why Are You Weighting? It's Not The Food That's Making You Fat!" which you can get at WhyAreYouWeighting.com  It helped me not only lose the weight, but keep it off permanently....who wants to have to keep re-losing the same pounds?

You can do this, and it will be easy once you change your programming.

i used to be a binge-eater, and my binge-eating took place mostly at night.
1) do some mental assessment. why exactly are you reaching for a snack late at night? are you hungry? bored? stressed? journaling really helps with weight loss.
2) KEEP TRACK OF WHAT YOU EAT. i can't stress this enough. i track my intake on a website called www.sparkpeople.com, and it's AMAZING because it tells me how many cals to eat for weight loss, carbs, protein, fat, sodium, etc., and it calculates what percentage of my cals come from carbs, fat, and protein. it keeps me accountable for eating the right amount of each of those food groups, and for eating the right amount in general.
3) it's ok to have a late night snack! just save some cals for a light nighttime snack. that's what i do. don't go for ice cream or something...maybe once a week if you have to. idk about you, but for me eating a serving of ice cream is kinda torture cuz i wanna eat the whole carton haha. plus refined sugar makes you crave more refined sugar. for snacks, i go for 100-cal popcorn, crackers with laughing cow cheese, fruit sometimes with whipped cream, etc.
4) you say you're losing your drive to lose the pounds...you don't just need that drive NOW; you WILL need it after you lose the pounds or you will gain it back. maintenance is no cake walk. so view what you're doing as a LIFESTYLE CHANGE. idk what you're doing to lose the pounds, but make sure you can stick to it! i hope that you've used healthy means.
5) like others have mentioned drink water when you have a craving.
6) just go to sleep!
7) since you've lost your drive, create fitness-related goals! working towards them probably has more weight loss as a side effect. for example, i started a running program, and i feel accomplished EVERY time i finish one of the workouts! weight loss comes as a side effect because running is a very effective workout.

I have the same problem.  I lost 40lbs and have been plateauing for the last 6 months.  I've been trying to lose my last 10lbs.  It's been difficult but I started weight training and it seems to help a bit.  I also like to eat at night too.  I haven't learned how to avoid eating late at night; but I do try to eat lower calorie snacks; like Skinny Cow ice cream, yogurt, fruit, tea, almond milk, etc.  Good luck!

Go vegan! Plus, it was God's original diet
for man... Whole grains/multigrain everything, veggies, fruits,
soymilk, nuts, beans, etc. It's healthier for you and you don't build a
lot of body fat quickly. Seriously...After changing my diet, I noticed
that my body fat did not build up fat quickly(even if I didn't exercise for a
week!). But of course, exercise 6 days a week. Your body needs one day
of
rest. Meals should be spread out about 5-6 hours apart. No snacking in
between. I've tried the "eat small portions" every 2-3 hrs...nope,
doesn't work for me. It is better to not snack on anything except
water. Do your part on food and exercise and have faith. =]

When you were loosing the pounds, were you going to bed earlier than you are now since it's summertime? I started training for a half marathon and found that if i didn't go to bed before about 10:00pm, i started snacking and i wasn't reaching for the carrots and spinach salads...i was going after the popcorn, chips, and ice cream. So, if you answered yes to this question, this could be some of why you snack late at night and why you aren't loosing weight.  Your metabolism slows down at night b/c it assumes your body should be sleeping and not introducing more food into your body.

When you wake up in the morning, your body should be hungry. If you are snacking late at night, i gaurantee you won't be very hungry in the morning; which makes you more likely to grab something unhealthy to snack on on your way to class or work. If you start out the day eating junk, you're more likely to feel ok about eating junk through out the day.

So, not only does going to bed late effect your late night snack cravings, it also effects how you eat the following day. Try it both ways and see if there is any truth in what i have shared...i think you'll see there is :)