The part of your essay that answers the question what is this essay about?

Your introduction explains why you are writing the essay or what is leading you to write the essay.

The conclusion explains what your essay is about and your solutions.

It helps if you can start with a sentence or two of beautiful writing to make your reader feel at ease! (Notice an extremely successful politician. Before he gets down to business, he smiles to make you his friend.)

Are you writing it because you see people standing around begging for food?

Are students simply walking beside trash thrown on the streets that they could pick up and throw into trash cans if trash cans were available?

Do you think Little Nell got a rotten deal and you are going to explain why?

(Our successful politician introduces his subject.) etc.