There are a few things you'll need for your trip. These aren't necessarily must haves for everyone and every trip, but these are the things I'll definitely be taking with me on my trip. Some of these are no brainers, but you never know you might not remember even the simplest things sometimes (especially if you're scatterbrained like me lately).
Comfy walking shoes. I want to see all I can while over in Paris, and I know I'll be walking tons. Comfy walking shoes are a must. I'm looking for a pair that goes with most things, so I can rely on them to go with most of my outfits, but overall comfort is key. I have tried on shoe after shoe, from expensive $300 shoes to a $20 pair of ballet flats (for the record my feet favor the cheaper ones). And the key is to break them in before you leave, so you won't have blisters half way through your first day.
Those are just some of the essentials I think you'll need before traveling. Did I miss anything? Is there anything I should be taking that I forgot? Let me know so I won't end up without something I need halfway across the world.