What does it mean to have room in your heart?

I think it's something I can train little by little. Imagine one person has only 100 yen left for food and shares it with someone. Another person has a fortune and keeps all of it for themselves. I'm not saying one of them is morally correct. I just know which kind of heart I personally want to have. Laughing, crying, feeling something together with someone — that feels close to being alive for me. If someone I love is cold, I want to give them my jacket. And when they get warmer, somehow I feel a little warmer too. That's the kind of person I want to be.