I CAN'T BE ANYTHING OTHER THAN WHAT I HAVE

One day the king came to the garden and saw the fades and dying trees, bushes and flowers. Oak said that he dies because can't be as tall as a pine. Turning to the pine tree, the king found her falling down because she can't give grapes like the vine. And the vine was dying because it can't blossom like a rose. Soon he found a single plant, pleasing heart, blooming and fresh. After questioning, he received this answer:

-I think this is taken for granted, because when you planted me, you wanted joy. If you wanted an oak, grapes or rose, you would put them. So I think that can't be anything other than what I have. And I try to develop my best qualities.