I’m single and retired, and except for writing my screenplay, what else do I have to do all day?
Oh, so you don’t have a full time job. That makes more sense.
Nope. I was able to do it for a few years when I was working part-time, but while I was working full-time, I had no time or interest in getting healthier. It just wasn’t a priority for me back then.
Nine miles of walking would take a typical person something like three hours. Do you at least have scenic places to walk through?
Most of the year, I live in West Central Montana, so there are plenty of trails I can hike there with my dog. One of my regular treks is in the Lee Metcalf National Wildlife Refuge, just a few miles from my house. From mid-October to mid-March, I live with my daughter and grandson in Broken Arrow, OK. While not as scenic as Montana, there are plenty of places to hike around here, too. I sometimes walk around the neighborhood. Nine miles a day is easy compared to the 12 miles I was regularly covering while on my diet. That was brutal, but it burned a lot of calories.
Your environs helps too!
Returning to whether or not you are so unusual to be as compulsive of a tracker - I will stick with yeah on the intake side, but start counting considering fitness activities? Hoo boy. Tracking and planning compulsively is very common! So the difference maybe is just in where the obsessiveness gets directed?
Again kudos on your sticking with an approach that works well for you! Your fitness side is heavy on the low intensity long duration cardio and those two days of classes with balance and all over conditioning are great! How demanding is the strength work part of those classes?
If “not very” then the place to make your plan even better is taking the cite @Dr_Paprika provided under serious consideration. You don’t even need to know your maximum lift - but lifting heavy enough that you are near (not at) failure somewhere under 15 reps, full velocity possible up, slow controlled back down, in complete body coverage twice a week, really does add lots to maintaining or even increasing strength, power, and grip strength, increasing healthspan significantly. I suspect you’d quickly get hooked on those numbers too! 
I thought about doing that, but since I would be doing it on my own, I didn’t think the reward was worth the risk. I could see myself dropping a barbell, causing damage that would keep me from walking. However, I might be able to find someone at the gym who would be willing to spot me to make sure I didn’t hurt myself, and I could leverage their equipment instead of buying my own. I will be back there on Monday and will see what they have available. I don’t mind upping my weightlifting, as long as it doesn’t lead to injury or completely tire me out.
Weightlifting is much safer than most sports. In particular, gym machines are very safe and easy to use, but often too expensive for a home gym. If specifically concerned about bench pressing, this can be done very safely on a Smith machine. Avoiding injury is important, I agree.
If going to a gym is not appealing (and it is not everyone’s cup of tea), one can get a lot of mileage out of some simple devices: a pull-up bar (to which one might further attach bands or gymnastic rings), one kettlebell, an ab roller wheel. If more ambitious, some free weights, more dumbbells, an Olympic bar, a hex trap bar and a weightlifting bench.
I do sets several times a week for my shoulders and rotator cuff muscles. For these, I use a pair of ten pound dumbbells. Not every exercise requires heavy weights; ten pounds might even be heavier than desirable.
So I’m not trying to detract from the thread, but its important to discuss the sociological aspect of obesity.
Among peacocks, male peacocks like to grow large, bright plumages. These plumages serve no purpose other than to signal to females that ‘I am so healthy and so much excess calories that I can afford to waste them on these plumages’. They are a signifier of resources and health that female peacocks pick up on when choosing a mate.
One reason men are considered handsome is that testosterone suppresses the immune system. Also attractive faces signify health and a strong immune system. One theory on why a man’s face is attractive is the same reason (a handsome man’s face signifies testosterone, a strong immune system and health simultaneously), his face is saying ‘I’m so healthy and my immune system is so strong, that I can afford to be handicapped by testosterone, and I’m still strong and healthy’.
Obesity and weight loss serves the same purpose in society. hundreds of years ago, it was fashionable to be fat. The reason is that most people were destitute and worked all day in manual labor. Only the rich had the food and life of leisure to become fat.
Then starting in the early 20th century, poor people started getting fat too, and suddenly being thin became fashionable. Bein thin in modern society basically signifies ‘I have so much excess wealth, free time, mental energy and self discipline that I can afford to spend much of it on trying to be thin’. People who work 2 jobs, who are broke, who are raising kids, who are struggling with endless other problems don’t have the excess time, energy or effort to be thin.
Its basically the handicap principle.
The handicap principle further proposes that animals of greater biological fitness signal this through handicapping behaviour, or morphology that effectively lowers overall fitness. The central idea is that sexually selected traits function like conspicuous consumption, signalling the ability to afford to squander a resource. Receivers then know that the signal indicates quality, because inferior-quality signallers are unable to produce such wastefully extravagant signals.
Transitioning from fat to thin is a way to signify ‘I have excess time, energy, money, self discipline and resources and can afford to ‘squander’ them on losing weight and keeping it off’. That’s why people who lose weight with drugs like GLP-1 agonists or get bariatric surgery are derided as ‘taking the easy way out’ because they are seen as bypassing using their excess self discipline to lose weight. The drugs and surgery reduce the amount of time, effort, energy and self discipline needed to lose weight.
It would be like someone, instead of buying a $100,000 luxury car (signifying excess wealth that they can afford to squander) instead they buy a $15,000 car and put a luxury car body on it. Its seen as cheating.
But I guess my point is that, people have real problems and being slightly overweight like spice weasal is not ‘that’ bad for health. The health risks of obesity mostly come from visceral fat, and only a few pounds of visceral fat (or even a few ounces in places like the liver and pancreas) can be the difference between CVD and diabetes vs not having these conditions. The subcutaneous fat under our skin doesn’t cause as many health problems, esp if its just cosmetic.