There are thousands of tips. Here are a few:

1. Don’t expect to earn your living as a writer because it’s very hard but, as an avocation, it’s great. If you truly want to make your living writing, then spend a whole lot of time finding out what kinds of writing pays and how to do that writing. (Because it is possible to make a living as a writer, it’s just not the norm.)
2. Read, read, read because that’s how you’ll find out what other writers have done successfully. Then copy those writers.
3. Write, write, write and don’t worry about quality. Just do it and eventually, the quality will come.
4. Take classes, read books, go to workshops and conventions and listen to what experts say. Follow all that advice.