What is my core?

My core is the center of body called “tanden” physically.

It is similar to chakra and located inside part of the body behind/under the navel.

Mentally, living peacefully is my core spirit, too.

In brain function theory, brain and mind are almost same.

I don’t need to worry about what is core though.

All is one and one is everything like Taoism that relates to nature.

Understanding of the concept, “let it be”, leads to strong and peaceful mind.

I think keeping the core means having strong center as a human being physically and mentally.