I meditate. I can vouch for this article absolutely.
I used to meditate much better at 18, could drop into it quickly and produce some amazing visualizations. A few times I could imagine seeing the room 360 degrees around me all at once and in great detail.
Now it takes longer, when I rarely do it, and even the onset of primitive hallucinations usually snap me out of it. I dont have a clue how to get good at it again. Theres probably some guided meditation tapes out there.