People who learn to control inner experience will be able to determine the quality of their lives, which is as close as any of us can come to being happy.
Keep all your things visible in a hotel room, not in drawers, and all gathered into one spot. That way you’ll never leave anything behind. If you need to have something like a charger off to the side, place a couple of other large items next to it, because you are less likely to leave 3 items behind than just one.