I recognized that when people disregarded other languages or cultures, it simply placed more barriers. I can now speak four languages fluently. While each has taken dedication and time, I do not regret any of them. They have all given me a different perspective of the world, each helping me become a more well-rounded person.
This part above is the most important part of the essay. All the sentences that precede it are good, but the most important part is when you get here, to the end, where you share the insight you gained.
This is confusing: I recognized that when people disregarded other languages or cultures, it simply placed more barriers.----it is too obvious to say barriers result when people disregard. You should try to make this sentence perfectly express your most important insight.
Also, try to add a sentence that shows how the lesson you learned can help you in your career.
:-)