<p>"Throughout high school I have genuinely sunk my teeth into my work, allowing myself to take on challenges that I was not always sure I could accomplish."</p>
<p>This sounds somewhat awkward and may be grammatically incorrect. Any help would be greatly appreciated.</p>
<p>Try, “Throughout high school, I have genuinely sunk my teeth into my work, challenging myself with tasks in which a favorable outcome was not assured.”</p>
<p>“Throughout high school, I have consistently tested my own limits, taking on numerous risks in my work. I wasn’t always sure that I would succeed, but I did know this: I would do my best.”</p>