When I was younger I had no idea. So many millions do not have a clue. This was probably the wisest thing ever said.
The phrase: “An idle mind is the devils workshop” is very important.
Your mind, our mind, THE MIND, thoughts, emotions, attention, focus, expectation, are the material of existence. The reality we experience is born, designed, developed and unfolds through the mind.
Mind is everything.
We can meditate to remain focused inwardly, we can intentionally focus on our desires, and be a personal creator; or we can take our exposure to external conditions (the minds of others) and lament and ruminate on them.
The latter is to become a puppet and create the intention of forces outside ourselves by proxy, sacrificing authenticity and autonomy.
Mind your mind to live your life.