Before starting your own business, make sure that starting a business is the right thing for you, and figure out what kind of business you want to be in. One of the best ways to do this is through something you are probably pretty good at already: design thinking.
However, to really see design thinking effectively applied to designing your career, reading Bill Burnett and Dave Evans’ book Designing Your Life is one of the first things you should do. (I am actually using it right now to design the next decade of my career.)
One of the things that they show you how to do is ask the right questions so you can solve the right problems. The last thing you want to do is start a business that is smart as a business idea, but does not succeed in helping you develop the career that will be most fulfilling to you, and that you will be most successful in.