Sanghyang Kamahayanikan is a very big and important idea in Buddhism. It's all about how we can use our minds to be happy and at peace.
You know how sometimes you feel scared or anxious or angry? That's because your mind is not happy. But with Sanghyang Kamahayanikan, you can learn to control your mind and make it happy always.
One way to do this is by meditating. This means sitting quietly and focusing on your breath or a special word or sound. This helps your mind become calm and peaceful.
Another way is by being kind to others. When we are kind to others, it makes us happy too. It's like giving a hug or a high-five, it makes both people feel good.
So, Sanghyang Kamahayanikan is all about using your mind and heart to be happy and help others be happy too. It's like a superpower for being a kind and happy person.