As weird as it may sound my mother has had the most influence on me.
Why is this weird? It seems like she would be one of the people who would be most likely to have the most influence... her or your father.
I know that many people who find their mothers to be influential would be females, but i tend to have a different approach on this.--- oh, do you mean that you think boys usually aremost influenced by fathers and girls by mothers? That is not necessarily the case. Anyway, I don't think these sentences are important enough to be included in the essay. Let's get focused on the theme! :-)
I have to add to this sentence so that it is a complete sentence:
Although she has been a great parent, throughout my life I couldn't stand her at times due to a few
reasons conflicts.
In the sentence below, I will add two apostrophes and a verb (include).
These reasons include times she would be on my brother's side just because he's older than I.
I like the ending. I wish, though, that you could find room to tell about how her influence helped to develop your interest in the subjects you want to study and the career you want to have. That will make you seem like a more serious applicant. Talk a little about the field of expertise into which you have been influenced.
:-)