If you finally make 2019 the year for you to change I encourage you to stop trying any diets at all and start thinking about why you make the food choices you do and how to change your environment to make healthy eating easier for you.
Your environment can be set up to make life easier.
As for why you make food choices, I suggest you start reading habit and change psychology books to understand what triggers you to do the things you do.
Awareness and tracking will show you patterns of behaviour that you didn’t even know existed. You know what I mean. The bites and treats throughout the day. The 3pm munchies. The late night snacking.
These two major habits, discovering why you overeat and changing your environment will have more of a long term impact that any diet for weight loss.