Could you check a sentence that sounds weird?

Many students depend on their parents or teachers a lot because it is difficult for them to solve difficult problems. On the other hand, some students do not depend on their parents or teachers. That is because they have an ability to do their work independently even though they need to spend much more time getting them done. Learning how to be diffent from others makes possible for many students to have an ability to do thier work independently after they are mature. It other words, being different from others can be a motivation of our nation.