Welcome to 3FC
I wish you all the best in your weight loss journey.
As for some tips, I would try and re-evaluate your eating as well as targeting your triggers to turn towards food for comfort. You already noted that you eat when you are stressed, and that is a big problem for a lot of people. Instead of turning towards food, ask yourself if you are really hungry and whatever it is that you are planning to eat, would it be beneficial to you. Again, you note that you indulge in cakes and sweets, and you feel awful after eating it. Keep that in the back of your head when you feel a craving coming. Mind over matter! You may slip up for the first week or so trying to change your thinking, but that's ok! We are all human and make mistakes. Feel free to post in the "Daily Accountability/Lifestyle Change" in the Weight Loss Support thread for extra help from the community.
Also, another practice to put forth is to prioritize time to plan for exercise and meals. There are so many books out there in terms of diet, I just reduce it to having at least 1/3 of your plate with vegetables, 1/2 if you can; 1/4 protein and 1/4 grain. You can start from there, and from further research and observation of results, you can adjust from there. You can also check out the whole section of "General Diet Plans and Questions" for ideas and support.
This is a really great place to be, I am happy that I found it, hopefully you will too