Traveling can be overwhelming, especially if you don’t do it regularly. Trying to decide what you should bring, and what should be left at home, can cause nightmares putting stuff in and out of bags trying to make up your mind. When packing my suitcases, if I have time lay everything out quickly, put it in my bag, weigh it and gage where I am. I then take everything out and look through it to make sure I’m not missing something important, or bringing a bit too much. However with my carry on I always pack the same things, and always know what I am going to bring.