@toppy
The area in the center of your head that you refer to is known as the Third Eye, and has been equated to the physical gland that resides there... the famous pineal gland.
When people get really high, the pineal gland can actually throb and pulse. It can also squeeze out a bewildering variety of really good brain chems. While it hasn't been proven that DMT is made there, it is the place that a number of other tryptamines are produced, and the building blocks for DMT are certainly present there. Perhaps if the brain is full of serotonin or melatonin, and the gland is sufficiently stimulated, it begins producing the more trippy varieties of indoles.
At any rate, mystics of every stripe have described the stuff you speak of. It is a pretty high state, and in the vedic yoga systems, the mudra to stimulate the pineal and propel one into a hyperspace trip is considered rather advanced. But, like most of those satoris and siddhis, these things can be stumbled upon accidentally, triggered by entheogen usage, awakened through intense meditation, or simply be an innate skill that some are naturally good at.
I don't think that everyone's pineal gland is in the same state of degenerative disuse as everyone else's. I find it quite plausible that you are able to activate yours consciously and use the higher functions of the third eye. Seeing that I have been able to stimulate my own third eye into gushing amrita (sacred nectar) into my mouth which was certainly tryptamine laden... as well as use my third eye to do some rather incredible things, I would certainly not be considered a skeptic on this subject, though.
Have you ever experienced this juicy saliva when your 3rd eye was pulsing?
Maybe you would care to elaborate on the methods you use to "control and keep your energy high?"
Be well fellow cosmic being.
HF