With all of the noise and junk that's floating around constantly on our phones and computers these days, it's not surprising that our minds are filled with clutter.
It's not easy to remove that mental clutter either. If you have a dirty room all you have to do is pick up the clothes and vacuum. Our minds are not that easy.
Since the distractions are always there and only increasing we have to constantly be aware of what we're consuming. Meditation, exercise, and sports are great ways to relax, get stronger, and clear our minds also.