This is a Shingon mantra, which I am empowered to pass on.
Starting at the base:
Namu, Daishi, Kongo, Renghe, Hum
When you have a strip of coloured shapes
place them in front of you.
Sit and breath comfortably
Now we can use each coloured shape
as a focus.
Bring relaxed attention to the yellow
square and bring the awareness to the body.
Then bring attentive awareness to the blue circle
become aware of any emotional arisings.
Then attentive to the red triangle
become aware of any issues to do with identity.
Then attentive to the white crescent
bring the attention to the mind.
On the Gold now finally contemplate
any understanding of Spirit you may have.
It is a good idea to keep a journal
of what happens.
This is a very transformative meditation
excellent for overcoming obstacles.