 Know if you can what you're going to be doing the first day you get to your destination. Have that outfit or whatever you're going to wear on top so you're not digging through your entire suitcase to get to it. And then when you pack these things, pack them strategically. This is what I know I'm going to do. This is what I need to wear. I tend to wear everything black so it all blends together and I don't have to worry about matching.