For this sort of thing, you need to narrow the scope. Focus on one or two things, or focus on several but connect them with one theme that is common to them all. Know what I mean? You probably already write something great. But I just want to mention this:
When you write an essay and have some trouble, start with a PARAGRAPH TOPIC SENTENCE. It expresses an idea that is important to you. Then, give an example to show what you mean. Then, give a few more thoughtful sentences about that idea.
Do not worry about the whole essay. Just do one para at a time. When you have a few paragraphs, go back and write an introduction.