attachment; tenacity of purpose
Refers to a strong emotional clinging or fixation, often with a nuance of stubborn persistence. Can be used for unhealthy obsession or determined focus depending on context.
He has a strong attachment to money.
If you let go of your attachments, you can live more easily.
Compound of 執着 (attachment, fixation) and 心 (heart, mind). The exact historical derivation is uncertain, but the combination naturally expresses a mental or emotional state of clinging.