How are hobbies turned into successful businesses?

Many people dream of quitting the 9-5 and turning their hobby into sustainable income or career.
But it often feels like there’s too much of a learning curve and too many barriers in the way.
They often don’t know much about running or marketing a business, they’re not sure their ideas would ever work, and they’re worried that they just couldn’t earn enough money to make ends meet.
However, this needn’t be the case. With some focus and dedication, you can start making money from doing what you love and become like the one in six small businesses in the UK that are hobbies turned into successful businesses.
Here are some tips on how you can do the same, plus some encouraging success stories along the way.