As if this world is big enough to living, everyone should be "Happy “not "Being misery."
As a result, if we can't achieve the great things, we still can do a small thing in a great way.
For example, the sparrows those who can only glide between the trees, are much happier than the eagle who flying across the sea.
"We can't fly higher, further, alike the eagle" sparrows think. "But the eagle also can't froth down to live and sing in this jungle same as us". One of them saying,
Who should be jealous? I'm asking