So here's the deal: I spent years in a truck and what my first piece of advice is GET OUT WHILE YOU ARE STILL SANE!!!
Next; it is pretty easy to put a microwave, minifridge and hotplate in there. If you're pulling a reefer you actually have a massive refrigerator right behind the cab. Since you'll be alone you won't need a whole range to cook on. You could even stow a camp sized bbq grill, and because you'll be waiting and waiting at warehouses left and right, you'll likely have time as well.
Don't make the mistake of thinking you're going to be able to just "stop at walmart". You go where your dispatcher tells you to and when, and you'll likely be behind schedule 90% of the time.
You'll see. And you'll begin to get creative as well, or you'll end up like every other driver on the road.
Here's some wisdom acquired from the lifestyle:
Trucking is good for two kinds of people. Those who are yet young and have no children, wife or anything else to keep a guy tied down to ANYTHING, and those who are old and kids have grown and left the coop and they just CAN'T wait to get away from the ol' lady. Anyone in between is going to struggle in one form or another.
It's a hard life out there, DOT will fuck your shit up, you WILL be lied to by everyone from shipping/receiving office employees to your own dispatcher. NEVER trust your dispatcher. They don't give a fuck about you personally or if you have 300 miles to go and only one hour on the book left.
For God sake anon, watch those mirrors! For all the shit I've heard people say about truckers, you will be absolutely AMAZED at the amount of retarded and ignorant people in four wheelers on the road. You can get fucked up in a hurry.
You'll see.
Wait until you have to take your downtime at some truckstop. Go chat with a few of these guys. You can see in their eyes that they're half dead inside. The industry killed them. It's rough. It's been nearly three years since I've left the business, my sleeping patterns STILL haven't regulated themselves out.
For all the shit I have against the industry though, I still love driving a bigrig. Good luck, driver; hammer down. Food will soon be the least of your worries.