Junior high school English written expression, help! I'm going to be a doctor

Junior high school English written expression, help! I'm going to be a doctor

I am going to be a doctor when I grow up.I can help lots of people and save them being a doctor.When I feel ill,doctors can always make me feel better so I admire them very much.Being a doctor must be patient and have a lot of knowledge.So from now on,I will study harder and harder.