Yes. I think a lot—if not all—of us have at some point. The trick is that it can be wildly different from one person to the next. The best tip I have is to push through it. Yeah, that sounds overly simplistic, and it is, but it's also true. Just think of where your characters are, where they're going, how they would react (all depending on where you are in your story) and write. I stick with the old adage "You can't edit a blank page." You can always change things later, but don't let a small hiccup turn into a dam that blocks the flow of ideas.
I started writing when I was a kid, maybe seven-years-old. I was obsessed with the movie "Duel," for reasons that don't fit this particular question. I wrote a sequel to it, and followed it up with similar efforts for other movies I liked. Over the years, I always wrote, though most of those stories have been lost to time.
For the type of books I typically write, good characters are the most important. An engrossing story is obviously up there, but it's so much more engaging when you're following well-written characters along their journey. I'd advise all aspiring writers to focus on their characters, develop their personalities. We don't need to know what they had for breakfast, but we do need to understand who they are, how they think, and what motivates them. The key lies in finding the perfect balance.
Don't go into writing solely in the hopes of becoming rich and famous. Yes, you very well may get there, but it takes a lot of work and a lot of patience. Whether you're a traditionally-published author or going your own way, you have to be the biggest promoter of both yourself and your books. I don't mean spamming people endlessly, because that will do more harm than good. Instead, look at it like you're running your own business.
YOU are the writer. YOU are the marketing department. YOU are the social media manager. It's a lot to juggle and, while this may not work for everyone, I recommend setting up a daily schedule and getting into a routine. Outline when you'll be writing. Designate a chunks of time for working on ads, social media (both marketing and regular posts), your website.
You can waste a day getting overwhelmed and, as dusk settles in, realize that you haven't accomplished anything that you intended to. Stay focused, set realistic goals (be it writing or sales), and take breaks when you need them. Don't put a ton of undue stress on your mind and body.
I also recommend doing a lot of research before you publish a book. Look into keywords. Look at book covers in your genre. Do everything you can to launch your book with its greatest chance for success.
Finally, don't waste energy comparing yourself to others. If you see an indie writer online boasting about a huge month, be happy for them, maybe even reach out to see what worked for them. The worst thing to do is to become bitter and convince yourself that you'll never succeed.
