Joyful heart is literally a heart that rejoices.
This is a story about when I started my ascetic lifestyle at an ascetic dojo. For about three months, I didn't even see the sunshine, and I was yelled at every day every day, or every second, in a super athletic space, so much that I could say every second, and every day was just denied.
Violence is prohibited now, but violence was still around in my day... What's more, they were being told half-way that violence was prohibited, so I was made to sit down for about 3 hours to “sit upright without rotting and not being pulled,” but in the end, they were kicked off... yet I certainly didn't have the ability to do my own training, so I can't complain... it's pathetic, it's scary... it's not really depressing anymore... I really shed tears when it's time for zazen I'm happy to play it. Because that time alone is undeniable.
But one day, three months later, I met an old woman from outside. When we met, they said hello and smiled. I was so happy with that smile from the bottom of my heart... it was just a nondescript greeting, but tears overflowed... A happy heart saves myself.
Oh, after all, it's probably reckless with a thousand characters and an example story with three hearts... I'll skip it for a moment.
Old heart, this is a kind heart like an old woman. What is called sincerity. You mean the old woman's smile earlier.
Please take a close look at the “everyone is kind” mentioned by the cat. There should be no stagnation in the hearts of people who are kind. Being kind to others clears one's mind.
Lastly, sincerity is a heart that empathizes with others. If the cat is happy to be treated kindly, the person who was kind will also be happy. Cats are happy when they are kind to others and are happy. That's why I feel happy and sad together, even when it's about others, as if it were my own.
The explanation was a bit rough, but this happy heart, kind heart, and sympathetic heart are kind hearts. If you practice this kindness for your own peace of mind, your feelings of dislike will disappear over time, even if your preconceptions themselves remain.