For someone whose first language is not English, you write very well. The logical flow of your ideas, as well as the overall fluency of your writing is evident.
Please let me offer some general comments -- constructive criticism intended only for the purpose of helping you to improve your writing.
General Observation 1. Your Opening:
"Making decisions is one of the most important things that we have to do."Hmmm..., Yes, decisions do determine our fate, and so it does follow that decision making "is one of the most important things that we can do." No argument here. But do all decisions carry equal weight? Is your decision to have either apple or pecan pie for dessert tonight on par with the one that has prompted you toward studying languages, peoples, cultures? (-Of course not.)
As it stands now, the opening sentence rings true, but with a bit of a hollow tone -- truism rather than truth. Here's an important axiom for you to make your own: Unless they can be turned to good effect, by either the elements of surprise, or novelty, or humor, or whatever else may bring your reader to new ground, good writers avoid truisms and clichés. Did you happen to notice that I didn't finish the last sentence with "like the plague?" Do you understand why? - Avoid truisms and clichés!
How could you make your opening sentence stronger? (1) Rid the hollow ring; avoid the truism! (2) Bring greater focus to the kind of decision-making that is life-changing. (3) Steal some of your own words and ideas from your second sentence. (4) Make the cadence of the language work for you.
Our power to change, to develop, to grow, to become, lies in our power to decide.I'll leave it to you to decide which opening has a greater effect, and why.
General Observation 2. Consider "Less is More" (The notion that simplicity and clarity lead to good design.)
Your sentence: Being interested in other people's culture and traditions is one of the main reasons that made me choose to enter that faculty of languages.
Less is More: Being interested in other people's culture and traditions is one of my prime motivations for studying languages.
Your sentence: For me, studying languages is considered as a gate through which one is able to discover others' world, and thought.
Less is More: The study of language(s) is a gate through which one can discover other worlds.
Your sentence: Apart from that, I have chosen this college, because I adore reading and writing.
Less is More: Another primary motivation? - a love of reading and writing.
General Observation 3. Make Explicit Use of Your Enallage
Finally, are you aware of your choice of words (which I've here bolded) in the following sentence? :
"Finally, I am certain now that I have made the write choice, as I have a definite and a grand aim to achieve; that is, to master several languages."If you are in fact aware of your word choice here, then as a writer you need to rephrase your sentence so that there is no mistaking that you do intend "the mistake." There are so many ways for you to do this. The easiest would be to use the phrase "right choice" in a previous sentence, and then to follow this sentence immediately with your "intentional mistake" of write choice. (For greatest effect, save these two words for the final two words of the sentence, and be sure to italicize them so that you reader is now convinced.)
Of course, one could just make a correction in the sentence above from "write" to "right" and then move on. But from reading your brief essay, I'm willing to bet that you'll want to make your words have the write play.