Mental health: refers to inner production; Joy: refers to joy, liking, liking and being happy.
The "joyful heart" mentioned by Buddhists means that a state of mind is calm, and this feeling of peace is very beautiful and enjoyable. I like this feeling very much in my heart and naturally feel happy. This mentality is called joy.
Extended data
Buddhism refers to the pure land of buddhas. For example, the endless sutra of observing life: "Sitting in the Dojo gives birth to Buddhas." Buddhism also refers to Buddhists For example, Volume 76 of Zhuzi School: "Buddhists believe in Gai Gankun's words, drift with the flow, break the crowd's words, and the words of saints."