My role model is Ahn Cheol-soo who is now, as you know, running for an election nowadays. Actually, he was a doctor at first. But several years later he made his own computer vaccine company and became popular among the public. And recently, he is working as a famous politician.
As I told you, he had three jobs by far and succeeded in every area. It could happen because of his diligence and passion. I’m always trying to resemble his character and personality.
I want to be a person who can help others and contribute to a society just like Mr. Ahn. That’s why I want to be a doctor. And to be a doctor, I think I should be more diligent and passionate from now on.
Thanks a lot for listening to my speech.
Can anybody check if my sentences are grammatically correct?
Thanks a lot for advance.
(P.S. This is not that urgent, but I would be very thankful if anybody replies to my question until tomorrow.

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