"It is harder to change human nature than to change rivers and mountains".

Human, firstly, is a personality. You can’t apply the same approach to each. People are different - shy, broad-minded, aggressive, stubborn. Every man to his own taste. And each has its own features - both physical and mental. You need to know how to approach to each. And this, believe me, is almost impossible.

As for the nature - it is the only one. And for many millenniums. People already know how to tame natural cataclysms, how to create sculptures from stone, paper from trees, food from animals.

But human is different. The only one who can understand him - is himself. And even then not always. For example me. My biggest problem - is myself. My features. If I knew what to change, everything in my life would be easier. But this ia a dream. An impossible dream.

Only man himself can make him change. But the point is that very often even he don’t know how.

As for me - human being is very complex. The power of thought, for example. You can drain the lake, but not the thought, unless this  person woun’t let you do it.