My aim in life

I wrote this paragraph. Please give your feedback and tell me how far was a successful in writing a correct paragraph.

Aim is a strong desire to achieve something in life. A person without aim is like a ship without a compass. Different people have different aims in life. My aim is to become a doctor. It is a noble profession. A doctor gets many chances to save human beings. He can save people from diseases. My wish is to serve the poor. I shall treat them and give them the medicine free of charge. I shall never hesitate going to the remote villages to treat the patients there. I shall be kind to them and shall treat them with care and attention. For this I shall be surely respected everywhere. At present, I'm studying and striving hard to achieve my aim. My God help achieve my aim, Amen.