Welcome Nic
Glad that you have found this forum for support and are reading under different forums for suggestions. There is a sub-forum just on emotional issues, and you might check success stories for how others handle staying low carb for the long haul. Many threads here too on sugar addiction...there are quite a few new books on the topic now like those by Karen Thompson and Sarah Wilson and support at DietDoctor https://www.dietdoctor.com/member/courses/jonsson

Many of the more current low carb plans emphasize using Real Foods and avoiding processed food like substitutes, e.g. Atkins Bars. There are so many, even libraries will have the popular Ketogenic/Whole 30/Paleo plans using real foods...you might want to check plans that allow 50 g carbs but also place emphasis that those carbs must be real foods. DietDoctor is again a good place to start. https://www.dietdoctor.com/low-carb Including why avoiding special low carb products may help you stay the course.

One more source that may help you overcome sugar addiction is one here about Habit Change. Gretchen Rubin has a popular podcast and books with how to change habits and create happiness. She also happens to eat LC so some of her advice aligns well for members of this forum. Good discussion here of abstainers vs. moderators: http://forum.lowcarber.org/showthread.php?t=468195

All the best,