"Make your bed - The state of your bed is the state of your head. Enfold your day in dignity. The five minutes you spend making your bed slows you down from your frantic, morning scrambling and creates a calm retreat to welcome you home at night. Plus, making your bed means you’ve already achieved an even more challenging feat: getting out of it."
I know I don't always do this, but I am always happier when I do!! And it is an easy thing to do, especially with duvets and big comforters. I am not talking hospital corners (unless you feel the need) but just pull up the sheets and blankets, fluff the pillows. And it is just like brushing your teeth, once it is a habit, you won't think twice about it.