Comment by hansmayer

Then dont sit still for 30 mins - try doing it for 3 minutes at first. If you feel like it, repeat the next day with either the same or longer length. Or dont do it at all. If you do - think of it as a kind of a meditation, without the extra steps. Some isolation from sensory stimulation is good for your brain - there is growing evidence we are all over exposed to attention-robbing mechanisms of the digital world.