Although I am disagreeing with you, I do not mean this harshly. This is just my understanding and interpretation of the topic.
I think you have found a way, but I don't think you've found the one and only way (not even for all Christians).
As you said, "Jesus, says all over the new testament that we are not supposed to be caught up in the rule of law," but that doesn't mean we're obligated to break any of the rules/laws (either religious or mundane). If rules make your life easier, you're perfectly allowed to follow them (as long as you're not overblowing the significance of the rules, or considering yourself morally superior to those who aren't).
Many early Christians did, and some modern Christians do continue to keep the dietary laws. Some argue that while all food is allowed, that not all food is healthy and wholesome and that God's original laws did and do serve a higher purpose. That God wasn't telling us what we HAD to eat, but was telling us what we SHOULD eat, so there may be health advantages to following the old law, at least more often than not.
Science even backs some of this up. Following the "old laws" do (even today) significantly decrease the liklihood of foodborn illness (which was even more true before modern sanitation and cooking practices). A Christian isn't obligated to eat pork and shellfish, but pork and shellfish even today are more likely than beef and other old-law foods to carry potentially harmful illness.
Also for some people, even some of us Christian people, the structure of a food plan (a diet), allows us to obsess LESS about food, so a diet can help us give food it's proper attention, and no less or more.
For myself, I lived as you suggest for many years (some of those years as a practicing Christian, and some of those years were during times when I wasn't living my faith). Whether I was in Christ or not, "not dieting" did allow me to stop gaining weight, but it didn't allow me to lose weight. It was a peaceful way to live, not letting food control my every thought. Dealing with food only when hungry, and trying most of the time to choosing healthy foods as close to God's creation as possible, but doing so allowed me to maintain, not lose. To lose, I had to restrict my food intake, and to do that I had to know what I was taking in.
Calorie/food intake monitoring is not inherently incompatible with Christian doctrine. The Christian program FirstPlace4Health uses an exchange based program, and focuses on putting Christ first, using a biblical approach to weight loss and overall health management. The "diet plan" doesn't prevent people from doing just that.
http://www.firstplace4health.com/about/
I couldn't find a FirstPlace group in my area, so I chose a TOPS group (which although it's a secular program, also encourages an exchange plan). I'm diabetic, and my doctor also recommended an exchange plan.
I believe in callings, and different people are called in different directions. I believe in gifts, and people are given different gifts, and God asks us to use those gifts in service. How we use those gifts, and how we balance the secular and sacred is not a one-size-fits-all endeavor. It comes in many shapes, sizes, and flavors.

I am confused Kelli as to how you got that out of what I posted. My feelings of the commentary I posted was that it was saying that Jesus has never changed but as a society we change...we change on how God's WORD (even though it doesn't change) changes in how it is presented to us.

to you all.