In my opinion,to be a good person,frist of all,should be polite.If you behave polite,others want to make friends with you.Then ,you should be kind and warm-hearted,for these are the source of good person.When you give a hand to people ,they would feel you are really a good person,and you also can feel happy.
However,a good person has many good characters and abilities,so I cannot list them all out.Gerenally speaking ,as long as you do good to others ,you are a good person.