So sorry to hear you are struggling.
If it just feels too overwhelming to put everything back in the wagon at once, so to speak, just set a mini goal that you are 100% committed to this week. Like just focus on the workout plan, and maybe keep it on the moderate side since so many of us have a tendency to go gung-ho then burn out. Then next week, tracking no matter what you are eating. Or worry about just getting the GHG's in if you aren't, etc. Whatever you think would help you the most and feels like something you can accomplish if you focus on that and just let the other stuff be noise for now. Sometimes we try too hard to pick up where we feel we left off and then just discourage ourselves if it doesn't instantly click together again.
Personally keeping the activity on track seems to impact so many things - I feel more energetic, I sleep better, I am usually a little more mindful of my choices, etc.
My first leader liked to say 'Track on the days you want to lose' - I've thought about writing down that phrase, maybe on a cutesy-decorated post-it or card or something and put it near my computer monitor - where I usually do my tracking, so on the days I'm feeling tracking-challenged it'll be right in my face.