how to write a good essay plan?

how to write a good essay plan?
have just started a health course with the OU an need to write an essay describing the factors that influence health how do i go about doing an essay plan for this question help me i’m strugglin’ 🙁

I would start with an introduction which discusses what ‘health’ actually means. Some definitions, quotes etc.

Then I would briefly outline the different areas which could influence health, e.g. environmental, social, genetic etc.

Then I would go into more detail about each area described above, so for example in social factors you would specify and explain how things like social class (working class more likely to smoke etc), and peer pressure (teenagers binge drinking) would influence health.

Then I would write a conclusion.