Graduate / "a career in mental health, substance abuse" - Graduate Admission Statement help [3]

This is my Personal statement and I have some grammer issues and need help fast.

Growing up I was not the popular one in school, I use to sit back and watch the other girls fight and bicker about boys. They use to pick at me also and so, I didn't have that many friends. I often wandered why I never said anything back to them.

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