Can you write a best seller? Maybe.
Some people who contact me want a guarantee that if they work with me, their book will become a best seller. The answer has to be “no.” Anyone who promises otherwise has something to sell you. Besides, it’s probably the wrong goal.
If you’re planning to write a book, stop for a moment and think about the why. Do you want to cross something off your bucket list? Do you want to become known as an expert in your field? Do you want get asked to give speeches or increase your consulting fees? Do you want to give other people an idea of what it is that you do?
Once you know why you’re writing the book, you can make some wise choices about the content. You can map out a potent promotional strategy. You can figure out how to measure success.
A book will be successful for you if it changes your life in the way you want.