Ānjìng de huánjìng yǒuzhù yú bǎochí píngjìng de xīnjìng.
A quiet environment helps maintain a calm state of mind.
Tips
usage
心境 is more literary and introspective than 心情 (mood). 心情 captures a momentary feeling, while 心境 refers to a broader inner state or mental atmosphere — often used in writing and formal speech.