Dear Furkat, I think this sentence,"making our lives rich and wonderful is in our hands.
It does not depend on the environment that one lives or the conditions he or she is in." , is in contrast with the rest of your essay. you want to go to USA to continue your education because in your town(your present environment and condition) you have not many opportunities and can not achieve your goals. it means the environment can affect your life.
I live in a small town with a few populations
It's true that there are many advantages of living in a small town, people are friendlier and the crime rate is lower. But for a man who wants to gain achievements in the international level there are very few opportunities.
However living in a small town has many advantages such as friendlier people or the lower rate of crime, but for a man who wants to gain international level, there are very few opportunities.
While aas student, I have concluded to study for Master's degree abroad, in one of the developed countries.
The reasons for my decision is,that it gives me the opportunity
he existing educational conditions in our region are far from satisfactory.
I did not get far from satisfactory.
and become a successful leader