I own my own business and have been duccessful for a decade. There are three questions that you need to ask yourself: What is needed? What is my competition? Why would people choose me? What is needed? Look at what's missing in your target area or industry. Is there no market and that's why it isn't there or is it simply untapped? There may be a good reason it doesn't exist. What is my competition? Can I compete? Is the market saturated or is there space? What are my competitors doing currently? Why would people choose me? Can I do it better, or cheaper, or provide a better value? Why would they pick me over something else? These are important. You can be the cheapest plumber, but if you aren't good you won't have repeat business. If there are 40 other plumbers who have been in business 20 years you won't have a customer base to build from. You have to find a need, that needs filling, that you can fill competitively. Work towards your strengths. Don't be a painter if you are fucking colorblind. Don't be a tree service if you are scared of heights. Don't be a butcher if you can't stand the sight of blood.