YOU SAID:
Mindfulness is the key to the mind.
INTO JAPANESE
マインドフルネスは心の鍵です。
BACK INTO ENGLISH
Mindfulness is the key to our heart.
INTO JAPANESE
マインドフルネスは私たちの心の鍵です。
BACK INTO ENGLISH
Mindfulness is the key to our heart.
That didn't even make that much sense in English.