Having grown up in a family that succeeded in starting, developing and growing a business, where all members young and older of the family had a role, was key to their success.
These young folks understood the business model, keys to economic success, leadership, business development, customer satisfaction, service suport, marketing, supply roles, etcetera.
They began their new entrepreneurial business with a basic understanding of their mission, objectives, business planning, customer needs and what would make them successful.
I believe Tracie offers great advice. Should you not have a family business background, it is paramount to inject yourself into a business you have an interest in.
Bob recommends the following next steps:
If you want to start a business, you just do it. Nothing is stopping you from saying "I now own a business that does X".
Now, going to school will help you understand what it means to own a business. Do you want a sole proprietorship, or would an LLC be better? Do you have a business plan, or do you know how to write one? Do you know how to compute your costs, what your markup should be, and how to manage your inventory? What are the tax requirements in your local area/state? How will you market your business? What is your advantage over other businesses that provide a similar product/service?
School will help you start a successful business, but isn't a guarantee of doing so. Nor is it a requirement.