Technique 1: The Infinite Corridor

This technique is perfect for those who have mastered the art of staring into the void, but still seek a challenge.

Imagine a never-ending, infinitely long corridor with no doors, no windows, and no exits. The walls are a deep, foreboding grey.

Walk down the corridor for 30 minutes, then turn around and walk back. Repeat this process until you feel a sense of...