My own progress this last year:
I started working a job that was pretty stressful. I loved my job, no doubt about it, but had no life outside of the classroom. Would work long nights writing tests, thinking of lesson plans, etc... Not go out and hang out with friends or anything social.
What I did manage to do, however, was keep going to the gym...a lot. I went to the gym pretty steadily, Saturday-Sunday 2 times a day, Tuesday-Wednesday 1 time a day, each time going for about 1 3/4's hour, (one hour cardio, the rest doing weightlifting). But the stress and towards the end unhappiness started getting to me. I had dieted successfully and really focused on getting my weight down to 79 kg at its extremely lowest; realized that I should take a break from dieting and steadied at around 84 kg in May of last year. I'm a stressful eater, meaning that when I get stressed I typically would gorge myself, and I drank milk teas and eating occasional gorgetype meals.
Now it's one year later and my weight has gone up to about ~93 kg. So this job made me gain about 9 kilos of weight from stressful eating and late night work and plain unhappiness.
I suppose the lesson of all this is that diet and stress can make a huge influence on your weight. I've continued to go to the gym for ridiculous amounts of time, sometimes to the point of being all-body aching, jogging to 101 and back once a week, none of that helps if you're stuffing naichas down your throat every night.
Now done with that job I've begun the diet again, and it's tricky transitioning. I want to hang out with my friends, and guess what my friends always do when they're together? Drink beer, eat well, and sit around. Of course that's what I love to do as well, too, but I've never really thought about that lifestyle until trying to lose weight so much...