Fear to start
If you are an entrepreneur, you do not fear starting the company, you just start developing you first product release and move on. You will write a few words in paper, but I propose something similar to the Business Model Canvas developed by Alex Osterwalder, instead of the classical business plan.
However, many people feel totally scared about starting. Maybe you aren’t prepared at that moment. Maybe you shall wait a little bit more. Maybe the project you have in mind is slightly fuzzy. Maybe you need a partner. Think about why but try to fix it. One of the skills successful entrepreneurs have in common is that they know what they are good and bad at, and they find ways to overcome those internal barriers.
Before analyzing any business, first know who you are and where you want to go.