mental state; attitude; frame of mind
Refers to one's inner psychological state or disposition, often in the context of motivation or readiness. Most commonly used in the set phrase 心機一転 (しんきいってん), meaning 'a complete change of mental attitude' or 'turning over a new leaf'.
With a fresh mental outlook, I decided to take on a new job.
彼の心機がどうであれ、結果は変わらない。
Whatever his mental state, the outcome won't change.
turning over a new leaf; getting a fresh start; changing one's attitude
Compound of 心 (heart, mind) and 機 (mechanism, opportunity). The exact historical derivation is uncertain, but the combination suggests the workings or state of the mind.