What's YOUR strategy?

I have an appointment with one of these this morning.....

And I'm armed with my list.....

What's your grocery shopping strategy?  do you have one, or do you just wing it?  Isn't it frustrating to finish your shopping and then realize you forgot ONE item?  so how do you deal with your shopping, especially for the holidays?? Do share!  I would love to learn your secrets!  I plan to get there and get it done, before school is out, and before everything is gone...that's as far as I've gotten with my strategy this morning...oh and I've had a cup of coffee...I think I need the fortification of  one more cup!  How about you?