Mixing music inside a studio whether in a professional studio or your home studio usually creates a very familiar and ideal condition. These conditions can sometimes cloud our judgment especially in what we are hearing. Thus it is strongly advised that you listen and check your mix outside of the confines of your studio. Here is an old school approach to your critical listening stage and that is outdoors.
Start by asking the question “why?” Why should you do this process and how important to your mix? The idea is to listen to your mix in your usual daily environment.