@JLNobody,
I'm just gonna quote a whole bunch for you, I found it helpful
The master said to me: ‘All the Buddhas and all the sentient beings are nothing but the One Mind beside which nothing exists.
This mind, which is without beginning, is unborn and indestructible. It is not green nor yellow, is unborn and has neither form nor appearance.
It does not belong to the categories of things which exist or do not exist, nor can it be thought of as new or old. It is neither long nor short, big nor small, for it transcends all limits, measures, names, traces and comparisons. It is that which you see before you – begin to reason about it and you at once fall into error.
It is like the boundless void which cannot be fathomed or measured.’
The One Mind alone is the Buddha and there is no distinction between the Buddha and all sentient things, but the sentient beings are attached to forms and so seek externally for Buddhahood. By their very seeking, they lose it for that is seeking the Buddha to seek for the Buddha and using mind to grasp mind.