(Source: https://goo.gl/images/JNXzN5)
This might sound like your parents giving you a lecture or something but their are legit something to keep your room neat that actually helps improve your mood.
We all get bad days, but imagine having a bad day getting home from work to dind a messy house or messy.bedroom with an unmade bed. It makes your day even worse and you can't escape from the cause from your day cause of the chaos at home. This becomes a cycle.
Try for a week TO keep a tiddy room and keep it neat for a week a week and see how it influence your mood.