The Circle of Competence was one of the most important exercises I did before founding our current company Ongig.
The Circle of Competence is simple: you write down the things that you are competent about and draw a circle around it. And then, as Buffett explains, remember that the more you go outside your circle of competence, …
If you need to write a business plan I recommend you start with an outline. I found a dozen free templates and have included them below with links to dig deeper. Good luck!
The business plan outline I wrote for Ongig (below) was geared towards raising an angel round of funding.The 3 biggest sections were Business Model, Sales & Distribution and Financials.