I plan out all the meals I'm going to make for a week and then make a comprehensive list from those ingredients (plus snacks), organized by aisle in the store. For me that makes the task easy enough to complete, and prevents me from going over budget, since I'm not wandering the store aimlessly getting everything I need.

On the other hand, I only mildly dislike going to the grocery store, so that might not ameliorate the awfulness for you.