If you want to do it, do it. I’ll admit, not as catchy as Just Do It.
Many books could be blog posts and even more blog posts could be tweets, so I’ll keep this short. If you want to write, work out or take more risk? Stop thinking about it, along with the many reasons it won’t work and do it. Now.
Start small. Build the habit (read Atomic Habits). Learn more about the topic as you go. Progress.
Straightforward (but not easy.) Take action now.