Everybody has different skills. You don't have to be good at a specific subject or subjects to be a "brained student". If you really want to learn something and be good at it you can do it, but you have to work hard for it. Working really hard is the key!!
OH, sorry!! I just realized that you were talking about Right Brain vs. Left Brain.
Well, in my opinion a person needs to develop both, right and left brain, even though they are better at only one of them. But I don't know much about this, so I will include a link that can help you.
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