Who ever told you that the bamboo is more beautiful than the oak, or the oak more valuable than the bamboo? Do you think the oak wishes it had a hollow trunk like this bamboo? Does the bamboo feel jealous of the oak because it is bigger and its leaves change colour in the fall?
The very idea of the two trees comparing themselves to each other seems ridiculous, but we humans seem to find this habit very hard to break. Let's face it, there is always going to be somebody who is more beautiful, more talented, stronger, more intelligent, or apparently happier than you are. And conversely, there will always be those who are less than you in all these ways.
The way to find out who you are is not by comparing yourself with others, but by looking to see whether you are fulfilling your own potential in the best way you know how.
Comparison brings inferiority, superiority. When you don't compare, all inferiority, all superiority, disappears. Then you are, you are simply there. A small bush or a big high tree - it doesn't matter;
You are yourself. You are needed. A grass leaf is needed as much as the bigger star. Without the grass leaf God will be less than he is. This sound of the cuckoo is needed as much as any Buddha; the world will be less, will be less rich if this cuckoo disappears.
Just look around. All is needed, and everything fits together. It is an organic unity: nobody is higher and nobody is lower, nobody superior, nobody inferior. Everybody is incomparably unique.