Those long days are a bugger. It's hard to come home and "cook" after them, getting ready for the next day or two. I understand completely! I don't like 'em -- hard on my TMJ, but DH has taken to buying the bags of baby carrots that are all cut/cleaned, etc. to take for lunch. It's more expensive to buy the stuff that's ready to eat, but when time is precious, and cooking's not a priority, it's sometimes worth the little extra expense.
I'm starting to buy frozen meals for those get home late suppers -- those little boxed guys can be tasty, they're quick, and they're a finite amount of food! I haven't been worrying about "lean cuisine" or "healthy choice" but I am reading labels, looking for content not calorie count (haven't found any individual meals over about 650, which isn't unreasonable for something like a chicken/pasta/broccoli/cheesy sauce dinner) and looking for things I wish I had the time/inclination to make myself.
We're struggling with the change of habit too, and it IS hard when life is on the go!
Just had a thought -- got a cooler? Those blue things stay frozen a long time! Heck, water can stay frozen a long time in a cooler these days: I just had a cooler with ice two days later! They're also making coolers that can be plugged in to keep cool, but then you might just as well get yourself a little end-table type fridge and put it somewhere less-than-conspicuous (so you don't have to share it with the whole staff!)
Karen in Boise