don't try to start a business on your own unless you already have customers.

this sounds a bit backward but let me explain: you can do business as an individual and sell goods and services to people that you encounter. if you start earning real money on that, and business is growing to the point where you need more than one person, that's the time to do the paperwork to register a business, get an accountant, etc.

if you do it too early, you're just going to be doing more paperwork and waste money. it needs to have a certain scale before the authorities care to tax it anyway.

for a brick and mortar business the story is a bit different, but again, this is much easier to do if you already know people who would want to be customers of such a shop.

starting anything completely from scratch with no network is though. cold calling is the least efficient way of getting sales except for advertising.

as you can see, none of this is about how cool your business idea is. it's usually the case that the best business idea is determined by your circumstances and abilities, and what people in your network are looking to buy.

not all circumstances and abilities are conducive to starting a business. this is not a level playing field.