~ Periods/Full Stops. Take a breath. Think your thought--just one. If you were saying it to someone, when would you stop for about two to three seconds to take a breath and start s new thought? That's where a period goes. They enable the reader to parse your ideas and statements as he it she reads, and they are indispensable. Without them, the reader feels winded and fatigued. Here's an example:

I am the third 4th oldest of 4 brothers, 2 half and 2 biological-- well one being my twin. When I was born, me and my twin brother got separated, because my mom's best friend couldn't...

The period here ends the thought of your birth, and the thought of your separation behind in the next sentence.

~ Line Breaks/Paragraphs. Once you've converted a collection of similar thoughts, hit ENTER a couple times. It provides a visual line break that cuts me, the reader, that you're done with that part; I can take a second and interpret it before moving on to your next set of ideas. Like periods, paragraphs are absolutely necessary in writing.

~ Slow Down. Take a breath before you write a line, every time. Hold it a couple seconds, and let it out. Write your thought. Repeat the process. Why? I can tell that your thoughts were racing when you wrote this. Your sentences veritably sprint across the page. Take some breaths, take your time. Tell me clearly so you don't have to tell me again, and I don't misunderstand.