The mind is a bundle of thoughts.
One thought is one thought, and a collection of thousands of thoughts is the mind.
If I tell you to spill a pale of water on the street, you will spill one on the road.
But if I tell you to spill one million pales of water in the street, it will become a river.
Mind is much more complex than just thoughts.
It includes emotions, feelings, beliefs, convictions, etc also.
“Bundle of Thoughts “ was a more straightforward way of explaining meditation.
While meditating, one has to observe the total mind – thoughts, beliefs, convictions, attachments, moh, krodh, Maya, greed, everything.
But also realize that – the origin of all is that single false thought
“ I am this body.”
Just like a single poisonous seed has the capacity to cover the whole earth’s surface with toxic forests if allowed.
With Drashta dhrsti ( eye of an observer ), we have to carefully transcend the whole mind until the last thought ( belief ) remains ( that I am this body ), and transcend that too.
That’s when your identification with the body drops, and you become self-realized.
Same way, the mind is a river of thoughts.
A river can be stormy, or a river can be gently flowing; either way, it is a flow of thoughts, and we will observe it in full awareness, impartially, and without judgment.