It doesn't take much for a small space to look messy, but I get it. Life is messy. Life is busy. There's never seems to be enough time in the day to accomplish everything you want to accomplish.
If you don't have a chance to do anything else before you run out the door for the day, take 45 seconds to make your bed in the morning. Doing so can make a significant impact on your bedroom's aesthetic.
Less visual clutter = more tranquil space = calmer inhabitants.