I've gotten into the habit of hitting the "Return" key whenever I want to start a mew paragraph. A blank line then appears between paragraphs. Like this:
I wonder if part of your problem might have to do with punctuation marks and spacing. Don't hit the space key before a comma, period, or other punctuation mark. After the punctuation mark, just hit the space key once. (That's not how l was taught to type in high school, but I'm trying to break the habit of double-spacing after periods.)
Another tip: proofread. My phone, on which I type some of my posts, thinks it's smarter than I am. It's usually right, but it frequently injects some pretty weird stuff into my sentences. If I go back and change such things, the...apparatus...generally recognizes that I really meant what I said.
To err is human. To really screw things up requires a computer.
Youth, talent, hard work, and enthusiasm are no match for old age and treachery.