*after I got going it was hard for me to stop ;)
I see this thread started a while back but I know my curiosity has no expiration, so I thought I would share my experience as I feel it relates to your question.
As a teenager I was particularly withdrawn and thoughtful, open with close friends but a little socially awkward in general. I had no real sense of place with regards to "consciousness" as I never had a an experience to relate a shifting consciousness to. But between my junior and senior years in high school I attended a special program in Georgia known as the Governor's Honors Program (GHP) and this experience would alter my steady state I had known all my life. It was an intense program with a total of 600 or so of the brightest kids throughout the state nominated by teachers in particular areas of study (math, lit., languages, art, music, science, etc) and hand picked after an interview process to foster an atmosphere of social openness and exploration. the program lasted six weeks over the summer and held on the Valdosta University campus. It was particularly strict with its rules and adherence to class times, curfew, and bedtimes or you would be sent home. In addition despite many of legal age a strict ban on smoking as well as the obvious prohibition of alcohol; and on top of all this you had to keep your room orderly: bed made and trash regularly taken out. We met with our majors (mine was math) 4 hours a day 6 days a week, and our minors (science in my case) 3 hours a day 5 days a week. It was a boot camp of sorts, but if you didn't want to adhere to the rules you were free to leave--noone, I mean no one wanted to leave. It was the most incredible experience of our lives, to be surrounded by unique teachers, unique students and without tests mind you, pushed mentally on a minute to minute basis to keep up with the discussions, which ranged from extremely difficult logic classes to discussions on the nature of infinity, to guest lectures explaining the theory of relativity. Everyone was extremely intelligent and you pushed yourself to maintain as a competent member of the group, this was not your local high school breeze. I exlpain all of this in such detail to give you an idea of the structure and intellectual environment and the social interactions which transpired daily--it was truly phenomenal, and after about 4 weeks of this brain training, my mind pulsed and finally sitting in one of the fuzzy logic courses working out a problem and ruminating over the impossibility of trisecting angles something popped... and it was if my mind broke through the barrier of my known consciousness into the anecdotal 11% of our unused minds. It was an experience that would forever alter my personality and understood limits of human capability.
I became "funny" somehow and could see through life like it was a thin veil that after so much time of day to day existence becomes our full reality. That was what this program, this "brain camp" of sorts, had allowed us to do. They handled all of the day to day issues for us... our whole days were scheduled for us save 4-10pm where there were free extra-curricular classes on dancing and art offered if we so chose, our meals were planned and our shelter was provided. We had bed times, and wake up times and our minds were free to do nothing but think and learn and interact (probably the most important of all) with other amazing minds.
From this point, this 6 week training session I returned home with newly discovered talents and social capabilities. I transformed from the quiet, yet respected intellectual into for lack of a real term the respected-intellectual-but-funny-som-*****.. with regards to your thread post, this transformation didn't happen by magic, I had what I would describe as a consciousness shift within my brain. I had inadvertantly discovered a methodology of moving my consciousness around in effect to different lobes of brain.. It was a "physical" shift that I was in complete control over, yet understood the difficulty of explaining it in order for someone else to achieve it. It wasn't just a matter of sticking your tongue out twice and rolling your eyes to the left three times, there wasn't any secret code to enact this it occurred to me after weeks of deep mental stimulation in addition to already being a rather mentally engaged sort of person. But once it occurred, there was no denying it.. everyone around me knew something special had happened as I had writing skills and creative skills and math vision that was hard to explain from the blue. I then had the capacity to move my consciousness from lobe to lobe on demand. If I was in a creative writing scenario I would move into my frontal lobe and "look through the veil of reality" and the most interesting of thoughts would just flow out by removing the "filter" that we inevitably must walk around with to some degree. If I needed to understand analytical word problems or conceptually comprehend the function of a mathematical expression I would move my "consciousness" to the top of my skull (whether it was purely the parietal lobe operating, I do not know, but as long as I sat up right, and shifted my consciousness to this position these things were easy for me to comprehend). This is also where I would go to memorize large sets of information, whether I be soaking in a history lesson or memorizing 15 digit phone numbers with extensions--no problem. Understand, I am no genius and before this event would have had no idea what I am talking about now, nor have any way to relate to it. I feel it is important to share though, because If I can do it, then there are many many people out there with the potential and it is life changing.
There is no specific formula I could recommend, but there are several ingredients in my particular story I could share that I know were important. But I must also note there were several "negative" side effects to these new abilities. For one, despite being able to shift my consciousness, I couldn't turn it off. This was not a huge problem, except that it actually severely inhibited my ability to play sports. I had played soccer since I was five, was a starter for the varsity soccer team as a freshmen in addition to being the place kicker for the football team. I had a scoring records in both sports, but after returning from GHP could no longer "remember" how to kick a damn ball. This abundance of mental alertness and awareness which brought so many intellectual gains ruined my sports career as a senior. As the technical mechanics of kicking a ball are anything but intellectual, they are 99% muscle memory and released while the brain is in a beta-wave state allowing your body to take over after the 1% of intellectual engagement, I could no longer get my brain to enter this beta-steady state. It was just too hyper active. I had coaches slapping me on the back, saying just kick the damn ball and stop thinking so much, but I literally couldn't let my body take over as I had for 12 years in the case of soccer. It was frustrating to tears but eventually accepted as a small loss relative to the tremendous intellectual gains. I muddled through both seasons, feeling a tremendous amount of disappointment as there were many people depending on me and expecting much more than I was capable of giving--wrenchingly frustrating. The technical loss in music was similar, as scales I had known for years were banged out note for intellectual note, rather than just released from my subconscious as I had done for years. I had sat first chair in the state on tenor saxophone my 8th, 10th grade years as eldest of the 2 year classes 7-8, 9-10, and 11-12. I had sat 3rd 7th and 11th grades. As I was primed for first again as a senior I had lost the ability to release and managed to eek out a 3rd chair seating. This was still considered to be excellent but internally I knew I had just eeked it out... I just couldn't find my beta-state of mind. Honestly, it may have been there somewhere, but when your mind is whirring 10,000rpms all day you almost don't care to not shut it off... it's just so much fun and continually exciting.
So as far as I am concerned in addressing your question, yes, emphatically, I believe you can shift your consciousness and experience thoughts and visions and clarity that you may have never known. I have seen much by the way of masters of meditation who claim altered consciousness and out of body states of being... and after my experiences, have no reason to doubt the experiences claimed by a sincere speaker on the matter. I have never practiced meditation daily but wouldn't be surprised that it fosters an environment conducive to intellectual expansion as my environment in valdosta. Without a doubt, I would suggest a regular schedule, a balanced diet, daily exercise and refraining from any alcohol or physically harmful drugs in order to reach your full potential--in addition, of course, to a voracious appetite for learning and sharing. The lure of drugs and alcohol is absolutely worn away once the conditioning process gets into full swing... and I would challenge anyone on the planet to six-weeks sobriety with daily exercise to absolutely find a new wonderful you that you won't want to ever lose.
I certainly hope this was on target with your question. If anyone has any questions, please feel free, I am always happy to share.
carl