Think it really depends upon what direction you are approaching diabetes, why, how well you understand them and how dedicated you are in using that knowledge.
All, I know about calories is, because of my resection, I need about 20% more of them than I should. So, if I eat more of them than are comfortable, I put on a little weight.
I know a little more about carbs, fats and proteins. So they have slightly more significance: Too much fat upsets my colitis and to maintain my weight, without potatoes, it seems I have to eat a lot more than is comfortable. This also makes the colitis grumble and, so it seems, the diabetes nurse.
If you know enough to approach the numbers scientificaly, then perhaps you could play the swapsies game: If I have one of them, instead of two of that, I get 3 of those, 4 of the other and but only 1 of those and it gets me 6 of these, and avoid the ear bashings altogether?