Good to hear from you!
I also have a very active outdoor job, and it does make things a little different. I wish there was a trick to getting past the carb flu, but I don't honestly know of any. You just have to woman-up and do it. I promise, if you stick with it and really keep it clean, the crappy feelings will pass. Just give it a couple of weeks with 100% effort.
I swear, I spent the first couple of weeks fantasizing about 7/11's chocolate frosted donuts. I mean, SERIOUSLY fantasizing about their taste and texture and taking that first bite and... it was just awful. But now it's not like that. I really don't care. I like other foods more now, and I make sure I have the healthy ones around me instead.