I do sort of agree about finding the right diet. At the same time I think that it's easy to go from one diet to the next and never get to the bottom of the comfort eating.
I think that weight loss is mostly a mental, not physical journey for most people. Therefore yes the diet has to fit your lifestyle, but it's more about getting your head right. I've heard lots of inspirational things. At the moment I like the 'commit to recommit' one - i.e. when you set out to lose weight, you promise yourself one thing, that no matter how many times it takes, you will recommit to the diet and persevere.
In regards to the stress eating. Have you tried taking one step back, taking a deep breath and thinking through whether you really want that chocolate? Why is it that you cannot cope with stress very well? I presume you know all the usual strategies of distracting yourself, and taking it one day at a time.
It may be worth asking yourself whether it's easier for you to be overweight? i.e. if you don't feel comfortable being skinny & therefore attractive to people? Or another reason as such. Is the weight a sabotaging or protection mechanism?
Lastly, it does seem that you're being very hard on yourself. maybe take it easy? being overweight is not the end of the world! You could take a break til you're mentally ready to change your body shape. I believe that if you're not ready for such a drastic change, it will lead to putting on the weight again simply because your head isn't ready for it. So maybe a slower approach is worth it - losing a bit, taking a break to get used to it, losing some more, etc.
This website is worth a little read:
Kate Harding’s Shapely Prose
Hope I've helped and it's not just a load of rubbish I've been saying
