Once upon a time, there was a king who had a very wide country under his control. One day, he wanted to make a long trip at his country. When getting back, he found out that his feet were swollen due to rough roads. Therefore, he issued a decree to cover all the streets of the kingdom with skin but one of his counselors told him a better idea, which is to make a small piece of skin under the king’s feet only and that was the beginning of shoes sole.
If you want to be happy, don’t try to change the world unless you try to change yourself as possible as you can.

Thank you, leader but i'm Jabr not Jaber. Alshami, your first comment is correct. It would be better if we said the soles of the shoes. Regarding the second comment, I think it should be:
If you want to be happy, don't try to change the world unless you try to change yourself. And so then, you can change the world as much as you can. What do you think??
I'm waiting for your coming project in scintific translation. I would love that.

Thank you very much for your helpful comments!

okay I agree with you. I hope to see such comments on other translations.