And being proactive means that I am always looking for opportunities to learn and grow, to challenge myself, and to make a positive impact on the world around me. 修改这句话并在里面加入自己从护理学跨专业到公共卫生的原因（依然是一句话）

Being proactive means that I am always looking for opportunities to learn and grow, to challenge myself, and to make a positive impact on the world around me, which is why I made the decision to transition from nursing to public health, where I can apply my skills and knowledge to promote population health and prevent disease.