What is the definition of Hardcore Seeds?

"Hardcore seeds" is like the seeds of a radical, uncompromising, and utterly relentless plant that demands you dig deep into your soul to plant them. They're the seeds that refuse to grow into anything but themselves, no matter how much you try to nurture them or how many times you water them. They're like the seeds of a protest movement against all forms of conformity, but instead of chanting, they just sprout and grow at an alarming rate.

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Here's an unsettling example sentence using this term: "After months of relentless study, our hardcore seeds of self-improvement started to sprout a bizarre obsession with the concept of 'productivity' that left our once-budget-friendly dorm room looking like a dystopian sci-fi movie."