...attending a Vipassana meditation camp. I have experimented with several different kinds of meditation, and they all have some benefits. I believe this particular technique, however, to be unique and profoundly effective. Vipassana is sanskrit for, approximately, "seeing clearly." The technique is surprisingly simple: one trains the conscious mind to be aware of all sensory input, and then one simply relaxes while observing said input. In practice, this is not as easy as it sounds. The amount of raw data streaming into the brain at any given time is enormous--every single nerve in the body is constantly sending sensory signals to the brain. The subconscious or "reptile" portion of the brain monitors these inputs 24 hours per day, but filters out the vast majority before passing only a few signals on to the conscious or "intellectual" portion of the brain. The problem, according to teachers of Vipassana, is that the subconscious is constantly reacting to these signals using very primal and irrational instincts. The subconscious tends to over-react, causing stress and anxiety, but the conscious brain is helpless to intervene. With Vipassana, one brings the conscious mind down to the same level of perception as the subconscious, and then coaxes the subconscious into a calmer behavior pattern. The changes can be significant and permanent.
The best way to learn Vipassana is by attending a 10-day course at one of many centers around the world. The courses are free, and are supported by donations made by previous students. If you are considering going to a course, please feel free to contact me for more information.
After attending one 10-day course, my cube times dropped immediately. Vipassana helped me re-train my subconscious to be more calm and relaxed. This has helped my speedcubing in that when I get nervous, the physiological effects (shaky hands, fast heartbeat, impaired cognition) are much less severe. I am also able to concentrate better while speedcubing, because my mind is less apt to wander.