If you do not have a healthy balance with nature in your life, then your mind is cluttered. It will be no matter what. Nature is the way you not only cleanse your mind but also allow your thoughts to finish. So often, we start 10 new thoughts while were still in the middle of another one. And many times, we never finish a thought, allowing us to move on from it and not commit and further mental space to it. If we let too many of these thoughts enter our mind without finishing, we become overwhelmed, anxious and restless.