Formal education is not as important as having knowledge in the niche you wish to conquer. Only if you have specialized knowledge in a certain area will you be able to achieve success in said area.
Decide which sort of specialized knowledge you need.
It helps to understand what you need this knowledge for. What area do you want to achieve success in? This is the area you will need specialized knowledge in.
Find a source to obtain that knowledge from.
Possible sources include your own experience and education, other individuals, colleges and universities, public libraries, and special training courses.
Figure out which source, or combination of sources, works best for you.
Learn everything there is to know about the field you have chosen.