So you want to pack a carry-on bag eh? Well, you're going to want to make sure that you have everything you need in there (especially if you are intending on traveling with carry-on only). And if you are bringing only carry-on (to avoid baggage fees or you're just plain badass) then you're going to want to make sure ...
Are you that person that is hopelessly terrible at packing? I used to be that guy. I thought I knew what I was doing. I would carefully roll all of my t-shirts, fold my pants and my button-downs and place them all in my large suitcase. Cut to unpacking at my destination and everything in my bag is a jumbled mess... ...