“20 per cent inspiration, and 80 per cent perspiration.” - read it from todays newspaper 24 Hours while I was on the train to work.
Ask: How do I know my small business idea will work?
Answer: It isn't your idea that will make you millions, but what you do with it.
Ask: How to make your idea work?
Answer: 1. Write that business plan; 2. Do your homework; 3. Launch it already; 4. Get to work.
Getting things started is the best way to learn from your inevitable mistakes.