1.
mental preparedness; readiness; mindset
The state of being mentally prepared for something, including having the right attitude and expectations.
心構え is the mental stance taken up before something demanding — the readiness and attitude a person brings to it, as distinct from any practical arrangement. It is something that gets ready or that one holds, not something one does.
Formation: 心 'heart, mind' + 構え 'stance' — the posture the mind takes, on the analogy of a fighter's guard.