The gland is called "the third eye" for a reason: at the stage of embryonic development it is really an "eye" with a lens, which consists of two halves and then fuses into the likeness of a cone. Descriptions of the pineal gland from philosophers and scientists of different eras agreed on the fact that it was in it that the "soul" of man was stored.

The gland is named for the fact that it is shaped like a spruce cone. It's about the size of a pea.

Its most important function is the production of hormones.

We all intuitively KNOW where the pineal gland is located.

The pineal gland, also called the epiphysis, is responsible for the connection between the mundane world and other realities.
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It does this by translating the frequency of thought into a thermal bio-chemical electrical flow through your body and opening the mind. Your human brain converts the thoughts you create into thousands of bio-chemical [elements] every second. As we have explained, not every thought of the ordinary brain penetrates the Higher Mind.
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The epiphysis is a finely tuned calcite crystal, piezoelectric in nature, similar to quartz.

It's a frequency screen, a kind of filter.

Depending on the frequency of the thought or emotion, the pineal gland is a guardian in the path of what enters the portal of creation of the Divine Mind. It is in a rather constructive way a defense mechanism that prevents certain negative thoughts from manifesting.
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So please do NOT set yourself the goal of activating your pineal gland at all costs.

The BEST thing you can do is to live calmly in COMPLIANCE with the Universal Laws, CONTROL your thoughts and emotions, and get rid of the stereotypes of the dual world and habitual patterns of behavior.

And then everything will happen by itself, naturally and imperceptibly and exactly at the moment when you need it like air.

One of the parameters of Readiness for the transition to high dimensions is the SETUP of your ORGANISM to receive the new HIGH VIBRATION ENERGIES.