Shopping at home is...hard?

So twice a week i manage to order food, beer and wine for a whole marina and resort. I make all the specials and rarely have to 86 anything. But when it comes to trying to stock the fridge at home im utterly lost. My fridge has bare minimals. Once i get to the store.... i can plan a meal and buy the stuff. Its WAY TOO MUCH. Then i have nothin else. So i guess what im gettin at is single males, whats on your personal shopping list? How do you balance meals at home ?