Essentially, this is what you are doing within the essay process: breaking ideas down, then building them up again.
You need to: Throughout this process, the essay title is the single immovable feature.
So don’t be afraid of writing down your ideas before they are fully formed, or in the ‘right’ order.
Writing is an active and constructive process; it is not merely a neutral recording of your thoughts.
Instead, you can catch all of your ideas, in no particular order, on a sheet or two of A4.
Once they are down there it will be easier for you to start to review them critically and to see where you need to focus your reading and note taking.
Editing your writing as you develop your ideas is a positive not a negative process: the more you cross out, re-write, and re-order, the better your essay should become. The structure may be strong and clear, or it may be unobtrusive and minimal but, in a good essay, it will be there.
Underpinning the structure will be the ‘argument’ your essay is making.
Producing incisive and clear written work within a word limit is an important skill in itself, which will be useful in many aspects of life beyond university.
Good, constructively critical feedback can give you excellent guidance on how to improve your essay writing.