There are many different types of writing. Creative content for books, copy writing for advertisers, technical writing for manuals, content writing for the web. But whatever you're writing, you should always know who you're writing for - rather who your talking to - and write content as if you're talking to that one person.
Sometimes you'll find it hard to get started. Just start writing and get all your thoughts and the pertinent information out there on paper. You can worry about correct grammar and spelling later.
Write like your talk. Good writing is like a conversation between two people. Imagine you're sitting in the same room talking with a good friend and write using the words you would in your normal conversational tone.
Don't use words they'll need a dictionary to read. Use the same words you use in every day conversation. Don't try to sound like someone you're not. Just be yourself and write like you're talking to a friend.
Don't use filler just to make your piece look longer. Write concise, to the point copy that has true meaning to the reader. If you're writing a technical manual, you need to be precise but you still need to remember to keep it conversational.
Always proof your writing by reading it out loud to yourself. As you read, you will stumble over the parts that obviously need fixing. They'll be some words that will sound awkward or the thoughts that just don't flow. That's when you can start polishing your writing before it hits publication.
