The time to begin writing an article is when you have finished it to your satisfaction. By that time you begin to clearly and logically perceive what it is you really want to say.
You have to decide what is extraneous and what is central. There is always more to tell. If you want to have a finished product, at some point you have to say "enough."
I am a student of life, and don't want to miss any experience. There's poetry in this sort of thing, you know--or perhaps you don't know, but it's all the same.
They will always tell you that you can't do what you want to do, but you can do what you want to do. You just have to believe in yourself. The system is to bring you down, but you can rise up.