"私たちの喜びに喜び、苦しみに苦しまないことが、誰かを友人にします。"

True friendship is about sharing happiness and celebrating each other's successes rather than just being there in times of sorrow. Sure, a good friend is there to support you when things are tough, but a true friend delights in your joy as if it were their own. This idea isn't just about having a shoulder to cry on—it's about having someone who will dance in the rain with you.

Historically, this sentiment can be traced to many philosophical and religious teachings. Ancient Greek philosophers like Aristotle talked about the importance of virtuous friendships, where friends genuinely wish the best for each other. It’s not just a modern concept; the essence of true friendship transcends time and culture.

Imagine this: It's been a rough year for you—work stress, family issues, the whole nine yards. But suddenly, things take a turn for the better. You get that dream job offer. You're ecstatic, floating on cloud nine. Now, think about your circle. Who's the first person you want to call? The one who's genuinely thrilled for you, who screams in excitement and starts planning a celebration? That's the friend we're talking about.

Take Sarah and Jane, for instance. Jane had been struggling to conceive for years. When she finally became pregnant, Sarah was more than just happy for her. She threw a surprise baby shower, complete with all of Jane’s favorite things, and shared in Jane’s joy as if the miracle had happened to her. Sarah's happiness wasn’t just a polite acknowledgment—it was heartfelt, genuine, and infectious. This kind of heartfelt rejoicing is the essence of true friendship.

So how do you apply this in your own life? Start by being present. When your friends share their successes, listen actively, and respond with genuine enthusiasm. It's not about overshadowing their moment with your own stories or achievements. Instead, focus on them—ask questions, make specific compliments, and offer your support in their new endeavors.

Picture this: You're at a coffee shop, catching up with an old friend. They tell you they've just received a promotion they've been working towards for years. Instead of a half-hearted "Congrats," you dive in. "Wow, that's amazing! Tell me all about it. What does this new role involve?" Your eyes light up, and you can see their excitement mirrored in yours. It's a chain reaction of joy.

Think about the last time you achieved something significant. Who shared in that joy with you? Reach out to them and let them know how much it meant to you. And next time a friend shares good news, remember how it felt to have someone genuinely happy for you.

In our fast-paced world, it’s easy to get caught up in our own lives. But making the effort to truly rejoice in your friends' joys builds stronger, deeper connections. It shows that you care not just in times of need but in times of happiness too.

In the end, friendships aren't just about weathering the storms together—they're about basking in the sunshine together too. And that’s what makes someone a true friend.